People always say this, but the Germans didn't come to power in 1924, after the Red uprisings. They came to power in the Depression, when Germans wanted jobs.
(1) I assume that by "the Germans" you mean the Nazis.
(2) While the Nazi party did come to power during the Great Depression, they came to power only with the aid of German conservatives who feared that the Depression might otherwise lead Germany into "Bolshevism." Without the fear of Communism generated by the existence of the Soviet Union, German politics in the 1930's might have been very different, *even assuming* that Hitler would still be leading a mass movement.
(3) In any event, while the NSDAP grew dramatically during the 1930's, it did not come out of nowhere. The party did first have to exist in 1919-29 and Hitler become a well-known figure for it to grow in the 1930's. And the early history of the NSDAP simply cannot be separated from the fear of Bolshevism. In fact, anti-Bolshevik emigres from Russia (including Baltic Germans) played a critical role in formulating the NSDAP's ideology linking Jews to Bolshevism.
http://www.sscnet.ucla.edu/soc/groups/scr/kellogg.pdf There are also indirect effects. For example, it is quite likely that without the Beer Hall Putsch, Hitler would never have come to power, both because of the publicity he got at his trial, and because the failure of the Putsch convinced him that the NSDAP must seek a "legal" path to power. Now the Putsch was modeled after Mussolini's March on Rome (or a misunderstood version of it). So without Mussolini's success, Hitler's eventual success might have been impossible. And what made Mussolini's success possible was in part his role in opposing the factory occupations that were largely inspired by the triumph of Bolshevism in Russia.
Or take the SPD-KPD split. It is true that the SPD originally split on the issue of the War, even before the 1917 Russian revolutions. Yet this split might have been temporary if not for the Bolshevik Revolution and the creation of the Comintern. An undivided SPD could have received 40 percent of the vote in 1928
https://en.wikipedia.org/wiki/German_federal_election,_1928 and might have served as the basis for a stable left-center government instead of the instability of the next few years in OTL. And that would obviously affect the prospects of the NSDAP--even assuming it would exist as we know it--coming to power.
Anyway, we don't even have to rely on such indirect effects. Bolshevism clearly had a large direct effect on Hitler personally. It is simply not possible to read *Mein Kampf* without seeing a genuine obsession of Hitler's on the subject of Bolshevism--one which was hardly unique to him. Yet we are asked to believe that German politics without a Bolshevik Russia will be unchanged--everything from Hitler's initiation in politics (as a German intelligence officer whose original task was to investigate the radical groups that had sprung up largely as a result of the Bolshevik Revolution) to his rise to power (where fear of Communism was a key part of his appeal) to his decision to invade Russia in 1941 (something advocated as far back as *Mein Kampf* on the groud that "the Jew" through Bolshevism had caused Russia's "decomposition" and made it ripe for conquest by *Lebensraum*-seeking Germany), etc. All this seems very implausible to me. I think that a world where the Whites won in 1918 or 1919 would in 1941 be so different from the world as we know it that talking about Hitler, Barbarossa, etc. would simply be meaningless.