How do you meet people organically?

As someone who is very introvert and doesn't know how to socialize, I always find myself being quiet when I'm outside or just at home. Tried meeting people from dating apps and here in reddit but I always find it shallow and eventually I feel that the communication and connections falls off. I wanna build something that lasts and I'm comfortable with.

How do you guys meet new people? Like friends and/or potential romantic partners? I really want to explore and meet new people.

Or

Will I feel forever alone?