I don't know if you'll see this reply but as someone who can 100% relate, here's my 2 cents:

I'm an introvert as well - so socialization for the heck of it won't cut it.

Instead, start learning a skill, replaying a sport, or starting an activity that has socialization as a natural side effect.

Rock climbing, dancing, martial arts, group cross-fit seshs all will work

Blacksmithing can definitely be fun - I can already imagine it. I've been wanting to get into more farming/beekeeping, and other stuff.

Wish you luck man.