how do i stop feeling so lonely all the time?

19f here, ive been begging the universe for someone to love me for my entire life, and im so terrified that its no use im gonna be alone forever. all my friends have boyfriends/girlfriends except me. im so worried that there's something wrong with me. how do I cope with this overbearing feeling of loneliness, its getting harder and harder every day. ive focused on myself, ive learned to enjoy my own company, ive done everything I can, and still no one wants me. I spend every night crying myself to sleep because of how scared I am of being alone forever. does this feeling ever go away? any help is appreciated.

edit: please stop telling me stuff like 'socialise, join groups' etc. ive already tried all that and still haven't found someone. im tired of hearing that, its not making me feel any better.