For games, my suggestion is that you try a whole bunch of them; get Google Play Pass and, if you have a Netflix subscription, browse through the list of Neflix Games and try anything that looks remotely appealing. None of these are gambling or freemium - they have no way to make money from you except for your continued subscription - and there’s something for pretty much every conceivable genre.
If you can give any guidance about the specific sorts of things you like from games (action, story, puzzles, building stuff) I’m sure people can recommend some specific titles.
It’s about ads. The great thing about putting videos on YouTube is that Google does the work of selling ad slots for you, the not-so-great thing is that because those advertisers are actually Google’s customers, if they think they might be upset to see their ad running in your video, they’ll err on the side of pulling it.
But I daresay if Russell Brand had advertisers working with him directly, most of them would also be suspending their relationships with him right now; nobody wants anything to do with this sort of allegation.