Used to use YouTube, Facebook and discord. Just Facebook now. Not worth using the rest. The time vs income factor isn't worth it.
Use a few niche forums which brings the highest traffic.
Viewing post in Alternatives to big social media platforms
Niche forums may be the route OP should take as they foster a closer knit community of like-minded hobbyists. Much of big social media feels like trying to yell the most interesting thing over a hurricane of other voices and bots. A lot of authenticity is lost when you're only yelling the most interesting thing you can think of.