Just piling on but I essentially do the same thing on my letterboxd and I love it. I watch a movie then I can go in, give it a rating out of 5 stars and write a little review about what I liked and disliked. It’s a lot of fun too to be able to go back and sort and see what movies I liked or didn’t like and why.

I also generally trust the letterboxd opinion on movies more than any other site (like rotten tomatoes, IMDB , etc) I find those ratings tend to fall in line more with my tastes more often than not