People ask this question all the time, please search the forum. Short version: on itch.io, be active and interact with other people. Play their games, put them in collections and leave comments; take part in conversations here. That's how they'll know you exist and become curious to check out your games in return.
Outside itch.io, it's much the same: join communities of like-minded people, and talk to them. They'll want to know what you make. Having a site would help, too. And social media.
Making money on the other hand is hard. Don't get your hopes too high.