What can I (18M) do about the gnawing loneliness perpetually eating away at me

I’ve noticed that my jealousy of others that are in happy, fulfilling relationships (hell even being able to pick someone up at a party sparks the same feelings now) has increased more and more after enrolling in college. Looking at a happy couple makes my heart bleed.

It feels like I’ve tried everything and am the best person I can be, yet it still feels like not a single girl considers me worth their time. I can’t even hold a conversation (much less text) without them getting bored.

I know I’m only 18, but I don’t want to always be the only person who has zero experience with relationships and the opposite sex in whatever social circle I may find myself in. What can I even do at this point?