Different communities offer different contest and different tools that you can use by joining their community. Whaleshares has an event where you can promote your post live, and hear other people share theirs.
Pals is another sweet community. They even have an upvote bot. Check them, just ask in the room what the process is to complete the sign up. https://discord.gg/Eq537J
Discord is a great app, and you can switch back and forth between rooms and talk to individuals through private message if you're in a different room. It's a great networking tool.
Thanks very much for the info, I've been taking a look at that second one and I think it could be helpful.