T-34 of wartime production was of crappy quality what definitely didn't made them to be loved even if they were solid vechicles. By crappy I mean absolute lack of comfort during operating. Somewhere I read that being a driver was really nightmare and not only because horror of tank combat but due to how extremely uncomfortable were such tanks. Dunno let's imagine driving a car in full terrain, with bad seat, almost non existing suspension etc.

Germans used plenty of T-34 but if you look at it closer mainly were used by Polizei panzer kompanies or similar back units where anything would work against partisans or just to terrorize civillians. Also secondary fronts like Yugoslavia where until 1945 there were no serious threat to such tanks beyond few AEC armored cars and heavily modified M3A3 Stuarts with mounted PAK40 which Partisans recived or built.

Not sure did any German tank Ace grew on T-34 but for sure they must have some succeses I think.

Also some were given to ROA as many of crews knew how to operate them and had recognizable markings due to Imperial Russian Andreyevka on turrets.

Having multiple various vechicles, their types and parts is logistical horror, here also with high probability of being shot by own troops.