what is the best anime to start

This depends on which genre you're more into, for example do you like more action? Or do you prefer more psychological animes? Or maybe neither of them but romantic?
I would like to reccomend you this animes divided for genre so you can start which who you like the most.
ACTION: Boku no hero Academia, One punch man, Jujutsu no kaisen
PSYCHOLOGICAL: Erased, Neverland
ROMANCE: Clannad, Horimiya, Fruit Basket
COMEDY: Gintama, Blue sea

enjoy your journey!