Minecraft not responding, task manager not helping, skins not loading

I've been having issues with Minecraft for the past week I think and I haven't been able to log on because it wasn't responding. Now I fixed it but none of the skins are loading and every time I want to log on I have to go into task manager and end the non responding task and somehow it works, but no skins and trying to fix it every time I log on is getting kind of tiring