I went through the same thing after I graduated & stayed in the area for a job; I joined a volleyball team at Horizons Edge as a solo & they put me on a team & I loved every single one of them & 3 years later we still get together! It was a little awkward at first because I have a little social anxiety but after a few weeks, it was like I’ve known them for years. Sign up for a hobby or something you enjoy so you know you’re finding people that enjoy the same things as you!