also:
The first four seasons of the original version of The Powerpuff Girls.
Adventure Time.
The Amazing World of Gumball.
Pocoyo (idc, the animation is supreme and everything is so precious).
For more "adult-like" things:
Bojack Horseman.
Rick & Morty.
Midnight Gospel.
Bob's Burgers.
i love cartoons. also adventure time (duh), futurama, inside job was good, midnight gospel, and the second best hospital in the galaxy. if you want to be a bit bummed out you should probably watch bojack or moral orel (claymation actually)
If the voice in your head is being too mean ask it if it would talk to someone you love this way. My internal monologue can be a 💩 and this sometimes can help it be more constructive