That's sounds good but not quit true...
Not sure who you're replying to...
1.if it is true what you re saying than why were the germans in enemy soil in 1918 not the entente
Largely because of how far they got into France in 1914 before the Western Front stabilized. And when they pulled back from the Marne in 1914, they moved to areas that they could better support at the time and would be difficult for any attacking force to move onto. As such, the battles of 1915, 1916, and 1917 were all attritional battles deep within French territory. The French and British often gained ground, but not enough to truly break the German lines and force them to retreat at the time. They occasionally made minor breakthroughs in small sections of the line, such as the last French counter-attacks at Verdun in 1916 or the initial gains at Cambrai in 1917, but these were all largely localized actions and didn't go down to the rest of the Western Front.
The Entente didn't get that breakthrough until the 100 Days Offensive in 1918 when the German army finally began to break under the strain of four years of attritional warfare and after having spent a good portion of the troops freed up from Russia in the Spring Offensive. And in this, the German Army, particularly against the British, French, and Belgians in the northern sections of the line was in full on retreat to try and shore up the holes that had opened along the lines. This issues became worse as the Americans and French began to reach the area near Sedan where the bulk of German supplies coming into the southern section of the lines came into play. This accelerated the German retreat and they knew that if they kept fighting... it would not be long before someone entered German soil, and Foch, Pershing, and Petain were all floating plans around in that regard in 1918. In this, the German high command called it quits before the war could touch their soil... they recognized they'd lost, but wished to spare Germany the damage that had been done to France through four years of artillery exchanges...
And even if they did fight on, the Central Powers position was not great. The British were advancing into Ottoman held Syria in 1918, the Italians were pushing the Austrians into what had been Austrian territory in 1915, effectively erasing the gains made at Caporetto, with French and even some American support. And the armies of France, Serbia, Greece, and Britain were advancing into Bulgaria and Serbia from the Salonika Front at the same time... and Romania was looking at potentially rejoining the war on the Entente's side... again. Thus as Turkey, Bulgaria, and Austria collapsed, the Germans faced a major issue, in that if they kept fighting... even if they somehow held on the border in the west, they would have to move troops to block attacks into Germany from the south and southeast, on a long line and largely without allies. And given their situation by 1918... Germany knew it couldn't win. They might manage a stalemate for a little while in one area, but eventually the armies of the Entente would enter German territory. Thus coming back to the point of calling it quits before that happened.
2. I never heard about the entente never had man power issues in ww1. (i thought france was bleeded out in 1918)
Everyone was bleed out by 1918, but that also included Germany. France on the Western Front had suffered heavy losses, but most of the deaths were actually in the first two years of the war. And while the Battle of Verdun was a fierce and bloody fight, it wasn't the bloodiest battle of the war, not even for France, and given its length, there are countless battles in French history that had a higher loss per day than Verdun. The thing that marks the French losses in total at Verdun as high as they were was that unlike earlier battles... Verdun lasted nearly the entire year of 1916... 300 days. But even there, while total German casualties were lower than total French casualties, the exchange rate was practically 1:1, which wasn't a good situation for the Germans in the long term, given the number of enemies they were fighting at the time.
And much of this situation really didn't change that much by 1918. Sure Russia had left the war... but Germany had also lost men at Passchendaele… and the withdrawal from Russia did not suddenly mean that EVERY German soldier would come to the Western Front.
3. The fail of spring offensive was only fail because everybody knew that germany will be defeated in case the would not win before us soldiers arrive to the front.
The Spring Offensive was launched with the idea of splitting the French and British lines apart before America could come in, yes... But it failed due to Germany's logistical issues, Ludendorff's poor strategic planning, and ultimately by the fact that the Entente didn't just collapse under one hard blow as Ludendorff expected, forcing him to go further and making his already poor logistical situation worse. This then left many of its lines exposed and with the best troops used up in the offensive.
4.the fact how much casualities the germans inflicted on entente in the 100days offensive (mor than a million soldiers) shows that they werent beaten with the stop of the spring offensive.
They hadn't reached the point of surrender, true, but given that the 100 Days Offensive finally saw the Western Front break open in a way that hadn't been seen since 1914, and in the Entente's favor... that would be a sign that the German military position was being effected by the lack of logistical support from behind them... that they years of war was beginning to truly show through. And while yes, the Entente took heavy losses in the 100 Days Offensive... a lot of that should be noted that with the trench system finally broken, you had armies moving in the open and thus not sheltering in trenches. In that sense, trenches saved lives as they gave people place to take cover. Once the system broke, that cover was lost.
5.)also you forgot that only the entry of usa prevented the germans to exploit their victory on the east (which would have resulted the fail of the entente blockade)
In what way? The US military really didn't engage the Germans in any real way until the Spring Offensive was starting to run out of steam and was collapsing under its own weight. They might have gained more ground if the Americans weren't there, but their own supply chain would have broken the offensive short of their primary objective, the removal of France and Britain from the war...
And had America not entered, the Germans might not have even attacked, they might not have felt so desperate... but then at the same time, it should be noted that the blockade would have continued and that the Germans would be able to move everyone from the East to the West, as they had troops there to make sure Germany got grain from the Ukraine and were also assisting the White Army against the Bolsheviks. So it really isn't as though Russia falling out the war was fully the sort of "game changer" that it would appear to be on the surface.