hi!
I really understand where you're coming from! I low-key want to drop out of university but i'll need a degree if i ever want to do something in my chosen career path so i need it lol. But there is so much you can do just depends what!! You say you are into comp sci? are you into games then? maybe become a youtuber or a twitch streamer - you never know you could make it big!
Either way first things first you've got to think about what you would like a career in - once you've decided that you can work your way up. Let me know some things you decide on then i can try and help!
yes social life at uni is really really bad right now i can't blame you but just remember that only half of the stuff uni offers is going on right now! "I say this but i hate it here too loll". Maybe next year you can retry after you take some time for yourself and really think about what you want to do!
Mental health wise the best thing i can say is take some time out and don't stress you have plenty of time and nothing is set in stone! and loneliness wise (this is a bit weird) but if you have discord theres this website that lets you join discord groups which are about anything e.g. pokemon, games, music, science - you name it they've got it - and this would be a great way to find friends with similar interests!
I hope this reaches you well! And we can always talk if you ever feel down!
xx