recommendations

1.Death Note. This one will be your favorite if you enjoy smart writing. ...
2.One Punch Man. One of the best anime and manga out there. ...
3.One Piece. This one is a must watch before you die. ...
4.Naruto. ...
5.Overlord. ...
6.Dr. ...
7.Berserk. ...
My hero Academia.

I will write from the shortest anime I like to the longest (every anime which wrote bold is I can rank is 10/10 . They really worth it):

Your Name(film)
Masamune-kun's Revenge 12 ep.
Dororo 24 ep.
Jujutsu Kaisen 24 ep. + Film
Cowboy Beboop 26 ep.
Berserk (1 season , 25 ep. Other seasons is a lame)
Future Diary 26 ep.
Death Note 37 ep.
Attack on Titans 87 ep.
Naruto 720 ep. (350+ fithout fillers) (Anime of my childhood! )
One Piece 1050+ ep. (Ongoing) It's one of the longest but in the same time one of the coolest anime I have ever watch. Totally recommend it!

Last 3 is my fav

attack on titan one of my favourite

AOT, Spirited Away, Tokyo Ghoul, Hunter x Hunter,....