Need Opinions

I’m M(20) I don’t know why lately I have been really down. I have no clue what’s been happening to me.

I’ve let my self go I’m gaining weight like crazy (68 to 79 now, I’m 5’8). I recently changed universities to get into a different major but since then I don’t know man I’m just off. I feel like I’m not me I don’t want to do anything except just lay in bed.

I used to be outgoing and positive now I just feel lonely . I put on a facade when I’m with people but I still feel lonely. I stopped playing football⚽️,I’ve stooped playing table tennis. I don’t want to hang out with my parents or friends any more I just stay at home , go to uni and play FIFA and sometimes I go out (once a week ig for 2 hours)

Can anybody help me who’s been in a similar situation?

I don’t man maybe I’m just being dramatic,I just miss my old life .

P.S sorry for the scrambled ass post