If you want to express a very energetic diapproval, you may use the word
half-assed — this is an adjective meaning ‘inferior, poorly done. It may be offensive.
сheesy — adjective meaning “annoying or bad because of bad taste.
letdown — noun: it means “a disappointingthingor experience.
turkey — noun: a very inferior product or experience.
trash — verb to say bad things about somebody or something.

Imagine such a conversation, in which some people discussa new film:

A: — The cheesy dialogue was inexcusable. And the sound effects were really half-assed.
B: — Yeah, I can’t believe Spielberg would put his name on such a turkey. What a letdown.
C: — Are you guys still trashing that movie? How dare you dis my favorite director’s work!

We could also say: That scene was very sucky! (very bad).
Or: Those love scenes were really tacky (the same as cheesy, or showing bad taste.