Okay the real question, is there a good version of this game genre?

You downloaded it. You tried it.

End of thought process.

My guess to why the ads are so different:

The firms making the ads are probably completely separate from the developers. Could be just random people from fiverr making the ads. They get barely any gameplay footage, so they just come up with some random gameplay that looks fun in an ad.

I guess the game developers might be some random people from fiverr as well.

As to why it works: no idea. I guess some people just don’t care, and given how cheap these games are to make they probably just need a few people to break even.

The profit margins for selling a game are pretty high when you dont have to make the game.

Data harvesting. How many people just click "Accept" for every permission an app wants? It doesn't matter if the people never open it or delete it right away, it only takes seconds for the app to scan all that data and send it off once it has access.

Same reason they made ads that click themselves even though it literally costs them money: because people are fucking sheep. It works.