I also lost all my friends mostly due to my mental illnesses so I know how you feel. but you're not alone. I'm sure you're much appreciated by alot of people but you just don't realise it. it's okay to feel alone. I also feel like no one likes talking to me but just remember who you are. we tend to be the ones who lower our own self esteem.
love urself and love life just see what miracle happen in lifee be cool dude why do u feel like that just be happy with urself and see how many come to you heyy remember me and just do what i say if this happen then just smile that time loving urself is precious dudee and i just wanna say one thing love you who u are love everything especially love in with you take care