Soviet in CoH2 is BORING and NOT HARD (kind of) because you can run your conscript into a MG42 (the best machine gun in WWII) and throw a goddamn molotov, and reinforce with 15 manpower.
A) Stop your fanboy, the MG42 was just a machine gun, not the 'best'. Highest rate of fire, but also bad for barrel ware, ammo inefficient, and inaccurate. Well used, but not the objective 'best'.
B) No, you can't. MG42's suppress any infantry in the first burst, and crawling is slow as anything. Only works if your opponent has cover, and keeps crawling (through cover), or you didn't have full LoS, or flanks with multiple units, etc.
If it's just one oorah unit, get the suppress, get a second burst off, pack up and fall back a little, and resume fire. Re-positioning is not hard and really, really useful.
C) Conscripts are 20MP a piece, that one isn't even objective, it's just 100% wrong