I work alone, and, it sucks, and, I'd like to find like-minded folks who work on the same types of problems.
These days, are my options mostly HN, Slack, Discord, or, Reddit?
When I want to dig deeper, I "research", i.e. lots of search engine (incl Bing) queries, reading pertinent blogs and forums. Except in the most superficial sense, I have given up being a generalist.