Its not your age, it's the games you're playing. There's a ton of great games out right now, but if you're playing the same kinds of games you've always played, maybe you've outgrown them. You could be frustrated with their mechanics, or think their progression isn't as good as the old games, maybe you cant see as well or grind as hard as these twelve year olds on adderall, whatever it may be.

Try playing games you enjoyed before. You'll probably still like them. Branch out into different genres, even if it's something you don't know if you'll like or not. I don't care for top down games, but gave Hades a try and absolutely loved it. Maybe try to play remakes/remasters/new takes on old games. The REmakes for Resident Evil (particularly 2&4, I liked 3 but it gets a lot of deserved hate), and even the continuation of the RE franchise in Biohazard and Village are fun and scary. Just some recommendations. :)