Learn Romanian: Nu îți place filmul. - You do not like the movie.

In Romanian, to say you like something, you actually say that the thing "is pleasing to" you. îți is a pronoun that means "to you". You cannot use tu here because the Romanian verb a plăcea (to like/be pleasing) works backwards compared to English.

If this means "you do not like", why is the verb place instead of a "you" form?

Because grammatically, the movie (filmul) is the one doing the action, not you! Since filmul is an "it" (a 3rd person singular subject), the verb takes the matching form place (is pleasing). The literal translation is "The movie is not pleasing to you."

What does the -ul at the end of filmul do?

It means "the". In Romanian, the word for "the" is attached to the end of the noun instead of coming before it as a separate word. Since film is a singular neuter noun, it takes the ending -ul to become "the movie".

Can I put the "not" somewhere else, like "îți nu place"?

No, the negative word nu must always come first. The little pronoun îți and the verb place are tightly linked together, so nu has to go right before that whole package.