Skin Bug

Hello, my name is ben and im playing mc for a while and im getting a little bit tired about something, that i can call like a bug or something when im playing minecraft above the version 1.12 and +

1.12: Well for this version with the screen #3 we can see that i can see my skin properly but sometimes i can't see the others if we check the screen where i am on 1.8 and im seeing ever skin. Screen #2

1.14 + : on this screen i was on 1.16 but ik that on 1.14 it do the same thing so i don't see any skins  even mine on this one. Screen #1

More information: i've been playing on Lunar client since a while now because my normal minecraft luncher don't answer anymore, but for me it dosent matter and im okay with it cause i have 2 lunchers that i can use Lunar client and Badlion client but the issues is i like to see my skin cause i play in f5 a lot of times so when i don't see my skin its a little bit of problem. 

I also uninstall every of my .minecraft files 4 times with my ressource pas shaders and everything even my luncher but the skin bug is stll here.

If you guys can help me out with it would be appreciate a lot 

Goodbye and take care of yourself,

Beenou.