Question Why I don´t make any money making games?

Hi, I am young game developer I have made few games and I have published 3 games, one of them has ads in it. After the first few days, it has made me roughly $0.19. I admit that I haven't made much marketing to the game, and it is just simple game with AdMob ads, however if you look for example at this video:

, the author has made $2.86 out of hist first game that is simple as well. How can I make more money with making games?
Here is my game: https://play.google.com/store/apps/details?id=com.BojdaStudios.WordGuesser

(my ads CPM is $0.65 and nearly everyone that plays my game is from Slovakia)

 

I've made a few games over time, some games made almost nothing, and some games made thousands over time.

Here is my advice:
Know your target audience! You can't just expect to make a game and have an audience out of nowhere.
Ask yourself.
- What missing hole do I cover with this game in the industry?
- Why should someone be interested or bother playing my game over any other more popular and with an already established fanbase?
- Where and to whom do I promote/interest my game?

 

Back in 2010 when the author started the mobile game industry was very different than it is now. You could make a game back then and have a reasonable chance at success without marketing. You can't do that now. Android alone has at least 50,000 new apps per month.

https://www.statista.com/statistics/1020956/android-app-releases-worldwide/

And even with marketing it's unlikely you'll be that successful without a publisher.

https://forum.unity.com/threads/do-you-really-need-publisher-for-mobile-games.1509476/#post-9472528

 

Thank you for tips, I appreciate it.