I feel like the best time for mobile games was back around 2009/2010 when touchscreen just became good and most stuff was either free or paid and without intrusive ads and monetization or other predatory bullcrap.

I recently tried Angry Birds 2, and I was baffled it would only take a few levels before I had to buy my way to more "ammunition" to keep playing. The original used to be good, I even wouldn't have minded if there was like an ad between games, or if it was just buy-to-play, but even that isn't an alternative option anymore. And they also pulled the original from the stores, I thought they had re-released it before, but couldn't find it either. And also when I first opened the game there was so much shit on screen that it was even difficult to navigate to just even find the actual game, it's absolutely fucking ridiculous.