Yeah! My current favorite is Uncletopia, which was created by the popular UncleDane TF2 youtuber but is now run by a community of dedicated people (but I think Dane still pays the bills). It has non-vanilla tweaks, such as no random crits, no random bullet spread, voting for maps and team scrambling, etc. The skill ceiling is also a tad higher than regular casual, which I like since it pushes me to improve further. I love the tweaks, the community and have never seen any bots, so it’s great!
Skial is another major network that has been around forever and is still rocking like a champ. I don’t play as much there, but I always find it a nice place as well :)