Aspects/skins don't load, animations don't load also.

Skins do not load. I have been with this error for a while that did not happen to me before and the truth is that I am already tired of putting up with it. The error is that when I play minecraft in split screen with my brother, the skins do not load, we always appear both as Steve or Alex despite the fact that in our inventory and profile it shows us as if we had the selected skin, which in the game does not pass. Sometimes the skin comes to load, but if I go far or my friend goes far, if I approach him again the skin from my friend's perspective disappears and I go back to being Steve. Which bothers me because we can't have skins because the game doesn't load them from each other's perspective. EDIT: It should be noted that my Internet is good and does not usually have failures, and I have already verified that the failures are not due to the Internet. Edit3: I also noticed that some motion animations also don't load.