There’s a couple of things you can do:
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Interact with people in the community, so potential users get to know you and the work that you do.
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Share your projects on social media.
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Invest money in advertising your games.
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Make sure your game has a trailer-video and good-looking art as cover image and on its page.
Hope that gives you a few ideas. Each game takes a different approach, hope you find the one that works for you.