As a poker player, this is very good news as far as I'm concerned. There is a lot of quality content on Twitch from poker players, especially during big events like the World Series of Poker.
Poker is a good reason why your definition is incorrect. Poker is gambling, but it doesn't resemble you slowly losing your money to the house. I mean, that happens too, but it resembles slowly losing your money to the other players.
Unless you're in the small % of winning players, then it looks like gambling where you slowly win money from the other players.
If you're a pro (or better than your competitors), it's kinda like being the house in a blackjack game, except a lot less variance, because the edge is greater.
But still a lot of variance. Poker is gambling, and it feels like gambling.
In other cases, there are strategies to just lose less money.
Anyway, all that to say, there's definitely slot advice videos and all that out there.