I love Attack on Titan, i think you should watch it , i wasn't really that into the other two. However my recommendations would be:
Black Butler or kuroshitsuji
Free
Kuroko no basket
Haikyu
Prince of tennis
Boruto
One outs
Beelzebub
The Disastrous life of saiki kusuo
food wars; shoukugeki no soma

you can find all this on a site called www.watchcartoononline.io
Well this isn't even a fraction of anime i have watched so if there is specific genre you prefer let me know , i am a jack of all genres. even yaoi and yuri.