When I hear about a new game, I usually read the first sentence or two on Wikipedia. I rule out games described as certain genres or types, like soulslike or online-only multiplayer games. Then, I check reviews on a site like Metacritic. If the critic or user reviews (doesn’t need to be both) are good enough, I add it to a list to play.
I also do this with movies and tv. Obviously, with sequels/series I know a little bit more about the games/movies/shows but I still go in as blind as possible.
I don’t like getting spoilers, but I’ll read the reviews, the description of the game by the publisher, and 2-5 minutes of let’s play footage (in the middle) to make sure I’m not wasting my money. That strategy worked well with The Witcher 3.
I’ll occasionally pull up videos if I’m unsure. But I just look for like 10 seconds of gameplay to see how it looks.