Hi,
i would like to share with you how i earn a little bit money on the games i develop. It's difficult to make money on games, because there is just so many of them. I am an unexperienced hobbyist game developer, so my games are usually small mobile minigames, because i am not able to devote thousands of hours to a big project and i am not experienced enough.
There are many options how to make money on your game. You can make money on ads, but you need to promote your game and that is really difficult. You can sell your games on AppStore, GooglePlay or Steam. But very few people actually buy games for real money on GooglePlay unless the game is really good, so that's not really a good option.
How do i earn money on mobile games then? I sell them to other people capable of promoting the game and they can earn money on the ads. I use a website called Flippa. It's an auction of websites, domains and mobile apps. After i develop a game, i just put it on Flippa for $1 starting price and wait for 30 days. Usually i have just a little profit, but at least i get paid for the games i love to make and i don't need to take care of the marketing.
This is my last game i made that i have in auction right now.
I hope this post helps you to make your first own profit on your game. Thank you very much for reading the post. Have a beautiful day!