If you’re going to skate a park, go early. People there at like 7-9AM are likely doing the same thing. In my experience, showing up alone during busy times isn’t awkward if you keep to yourself but follow the flow, wait your turn, and abide social contract. Talk to people if you want, reply if spoken to, laugh it off if you fall, tap your board when people land tricks, and don’t poop in the bowl. Otherwise, set up your own curbs/ledges and like the others have said, talk to yourself and befriend fauna.