Personally, I don't know what I'm doing, but here's a list of fandoms I'm in:

Hermitcraft- mainly Grian
MHA or BNHA- mainly y/n or oc stories. I don't care too much about the ship
Hetalia ( I think I spelled that wrong)- mostly about America cuz I'm American, but America sucks (sometimes)
Ninjago- was a simp for Lloyd. Now it's Morro
Dream SMP- mainly Dream stan, but I switch sometimes
Countryhumans- if it was obvious before, it's America  
The Rise of The Guardians- Jack Frost fan, still like him
Marvel- Mainly Spider-Man or y/n stories
Encanto- Camilo simp
Big Hero 6- loved Hiro and his tragic backstory
Voltron- Keith and I hated Klance; it's overrated
Danny Phantom- if it had to see the pattern,I loved the mc
Gravity Falls- I just read it for fun
Teen Titans ( Not Teen Titans Go )- didn't know there were books about this
Cuphead- Cuphead simp and loved the oc
Danger Force- tbh I didn't know there was a fandom for this
Now here's a list that will update on which fandom I'm currently reading about: 

Main: 
Hetalia

Side Chick:
Hermitcraft

Ones I will check up every once in a while even though I fell out of the fandom:
MHA or BNHA
Ninjago
Dream SMP
Countryhumans 
Marvel- Mainly Spider-Man

Wait? This fandom is still alive?:
Encanto
Countryhumans 
The Rise of The Guardians
Big Hero 6
Voltron
Danny Phantom
Gravity Falls
Teen Titans ( Not Teen Titans Go )
Cuphead
Danger Force

I guess that about it. Might more stories from these fandoms. They just need a proper storyline and motivation.