There are so many reasons you are having trouble, it’s a big game. I could write a long post about it but my advice is you load up the Expert AI mod and go into observer mode and watch a game as the Soviets. Things to pay attention to:
- The order the Focuses are taken in, and advisers recruited.
- The order technologies are researched.
- The rough ratios of production/construction in their respective tabs.
- The design templates he uses for the armies, the amount he fields, and when he trains them.
Between those things you can probably find some really helpful info, as the guy who makes the mod knows his stuff pretty well. The reason I’d focus on those things is that those are all pre-programmed and the AI can’t mess it up once it is scripted, so it will give you an idea of a pretty meta build.
My guess is the Germans are throwing are throwing a bunch of medium panzer tank divisions at you (they always will, and a lot of them) and you don’t have enough tank counters in your general composition. But without literally watching you do a Let’s Play it’s tough to say. So I’d watch what the Expert AI guy thinks are good meta builds.