Use the to sgree with someone who likes something use the to agree with someone who dislikes something

im slightly confused but what i can give you is that :

If you or someone likes something you'd say

You like : te gusta    or  I like : me gusta

And if your agreeing with someone you'd say :

I agree: estoy de acuerdo  

And if you don't agree ( disagree ) you'd say :

Estoy en desacuerdo

I hope i helped somewhat?

emmm picture?