I bought 2 units last year. Only a few were 410a units. The vast majority were r32. That's what I got. No extra refrigerant was needed, but r32 is not a problem to find. I would pick r32 again if needed.
I was in your shoes. Surrounded by stupidity and greed. Watch a bunch of videos and learn how to do it. Diagnose the compressor first, then decide if it needs changing. Come back and ask questions. Good luck!