well, if kyssing isn't an option, go grab a music instrument, practise hard* for 3-6 months and go meet people at jam sessions.
Picking a small one that is easy to carry around with you is always a good idea.
Also, usually musicians are super chill people and even for some former bullied, antisocial, depressed nerd it wasn't awkward at all around them.
My guitar literally is my portal to social life. Tomorrow evening I will likely hang out alone with 3 grills outsides to sing and strum some cowboy chords.
If this works for me, it will work for you too.
\*Practising hard means at LEAST 1h/day