How to get back into dating after a long term relationship?

I’m a 21 year old male who just got out of a 3 year relationship. She ended it, and I’m realizing I don’t really know how to date outside of that relationship since my previous exes were from middle/high school.

I’ve never used dating apps and don’t have many hobbies. My routine is mostly gym during the week and church on Sundays. I work as an electrician and have coworkers I’m friendly with, but plans usually stay in the group chat and don’t turn into anything.

I live in Austin, TX and my social circle is pretty small. Where’s a realistic place to start if I want to get back into dating and meet people naturally without forcing it?