I feel like you played an ESL smurf, from NA most likely. Maxim spam and partisans...
The maxim spam into AT partisan is the soviet's Anti-OKW. On open maps with no buildings you can attempt to rush a Luchs, so just play defensively, hold whatever buildings you have on your side of hte map, and pray. On closed maps like La Gleize breakout or whatever honestly theres just not much you can do unless the soviet player just screws up royally.
You can also try Firestorm doctrine if they camp the buildings with the maxims, but I doubt that would be enough.
Sorry if im being short, but im just being honest.
No mate, don't worry bout being short, it was short and concise
And yeah, just felt really helpless since 1 maxim covers the next. Any flanking attempt is stopped by Maxims after maxims, and once i got base pinned without fuel, I know I was totally fucked and just folded.