TF2 is definitely worth trying even now. The mechanics are solid and the community is still pretty active. I got into it last year and was surprised how much content there is. The trading and skin system is also interesting if you're into that. I read through https://thegameroof.com/bestselling-tf2-skins-in-2022/ to see what items were popular and some of them are still valuable today. The game has that timeless quality where it doesn't feel outdated even though it's been around forever. Give it a shot, worst case you wasted an hour downloading a free game