There are some good pvc floors nowadays which, although weird to play at first, are way softer on the knees and ankles. Old wooden floors are also not as agressive for those parts.

I play mainly in artificial turf which, depending on the quality, can be quite soft and bumpy.

Personally I used to get the most sore on my obliques due to rapid changes of direction which the body wasn’t used to at that weight. Nowadays I don’t have any problems after playing particularly if I have a good warm-up, I’m only left with some swelling after bad tackles lol