Skins

I played, then something happened (I don't remember what) and I decided to reinstall minecraft (by deleting everything from the .minecraft folder). When I entered the game, the skins (models) from the letter that came to the mail did not appear for me, I installed Java, but it does not help. Please tell me how can I see the skins again? I do not see not only my skin, but also the skins of other players on any server. I have the skin on the site installed. I didn't understand what the affected versions were, but I tried to play on 1.11.2 and 1.12.2