Hello codeforces

I am burnet out and can't actually have fun solving problems,

The first motivation for me was that there are plenty of fun problems out there to solve

Furthermore i feel like i am not learning much ,

I know i know you will say (solve more) so get better by time and whatever ,

I have no problem in that

But somehow i think it is more fun to focus on some topic and burn it to the ground,

Is there any good topic to learn that has a lot of new helpfull tricks?