It’s hard to get a feel for what is happening overall, but the amount of video of Russian armor of all types operating alone ( no infantry support) has been pretty shocking.
Circumstantially, its possible these are semi-abandoned and what we're seeing is attrition of the b-grade troops sent to try and recover them.
I suspect like all the other armchair experts this is actually a massive russian doctrine failure, but if I was being charitable I'd say we're not seeing the FEBA in play, this is post-fight or side-fight mop-up stuff.
And, they've been let down by spares, failure to do tire rotations in the last 5 to 10 years, fake parts, fuel quality, you-name-it. A lot of the materiel we see in the videos could be the class of stuff you would also have seen post D-Day: Dang: the duce is bust: ok, drive it off the road for later and move to another truck...