This video, although in Russian, gives a very good understanding of what it is like inside a Russian T72 Tank turret and how the auto loader works.
This video is from 2016 and so, obviously, not from the present conflict in Ukraine.
Inside T-72 Main Battle Tank. - YouTube
T-series tank autoloading mechanisms explained (T-64, T-72, T-80, T-90, T-14 Armata) - YouTube