I'm 30 and have virtually no friends, but I have a girlfriend, my dream career in tech working from home , and an apartment.
I don't like partying and I can't drink cuz I get sick from even a sip of hard lemonade.
I practice guitar, play computer games, coding side projects, watch YouTube/twitch (i don't donate money or anything), skateboard outdoors, go to the gym, waste time on Reddit, sleep, cook, clean shop online. Rinse and repeat. Sometimes I feel like I'm missing out but the last time I joined my gf and her friends for a party, people got drunk and started talking about politics.
Immediately regretted trying to come out of my shell.