As far as I can tell, the only platform that I found with medium level of reliability is metacritic.
I tried Letterboxd, Serializd, IMDB and Rotten Tomatoes, all of them tend to be very unreliable.
Is there is any other platform that has reliable ratings/reviews?
Exactly! You can also find more than one to follow, and take note of which never match your tastes. For me, I will avoid any movie recommended by PBS’s Patrick Stoner until/unless someone I trust tells me otherwise. I used to have two critics I particularly followed. One had the same taste in foreign film as I, and the other was ready to enjoy a stupid Hollywood rollick. Alas, I’ve lost track of the former and the latter is now at Slate doing a variety of stuff. The result is I pretty much stopped going to the theater.