itch.io

following other devs.......ehm like me for instance, i'd be glad to follow you back afterwards. You could further maybe try to practice in an upcoming (featured) gamejam, which could potentially bring you win money, and/or you try to join an upcoming co-op bundles, which mostly will introduce a lot of new players to your game

Just do what you expect people to do to you. Since you're talking about game devs, you could support them by playing their games, giving feedbacks and supports.

As for who, just pick whoever you'd like to support.