Hello. I bought minecraft 2 months ago and after a week or so, my skin suddenly changed from a custom skin to alex. From then i started serching online for erything that could help me fix the problem. Some days ago i even tried serching into the minecraft folder to see if there was something wrong with it, and i found out that in my assets folder, the "skin folder" was missing! 

So, i tried installing minecraft in a new pc to see if the minecraft folder was missing too, but when it finished downloading, i found out that the skin folder was there, in the assets folder. So i tried to put the skin folder into a flashdrive and downlading it to put it into my assets folder, but it didn't work. SO i tried deleting the assets folder from my main pc and downloading the assets folder of the secondary pc, but it didn't work either. I dont know what to do. 

(Btw, i played my frist days with the skin attached down below. I attach it in the case it could have something to do with this problem)