Good question, Antonio. Soltanto espanderò sulle eccellenti risposte già fornite. In spoken English, it’s all about stressing the correct word.
"Mi piace anche la pizza"
I like *pizza* too. / I also like *pizza*.
"Anche a me piace la pizza"
*I* like pizza too. We could also say “I too like pizza.”
Don’t try to translate. In a real conversation, either the context will clarify it, or you’ll simply employ an appropriate phrase or phrase that gets the idea across economically and idiomatically:
A: I like pizza.
B: So do I. I do too. (Informal: Me too.)
A: I like spaghetti, and pizza too / and also pizza.
Note: The grammar in "I do too", and especially in "so do I" is basic and fundamental to the English language. Learners need to master it to the point where it is as natural as breathing.