Netflix is getting boring!

I love to spend my free time watching movies and series on Netflix.

Unfortunately, what once seemed like a lot of movies, now seems like very little. [It's difficult for me to understand the original meaning here, but I think you are trying to say that while there are in fact still many movies, it now seems like there are fewer because you have watched most of them and they haven't updated their list. I've corrected you based on this understanding.]

The majority of titles I have either already watched, are unappealing, or are very old. [You could say are not attractive, but while grammatically correct it's not stylistically correct and doesn't sound natural. You could also say "Most of the titles", but "The majority of titles" reads better to me.]

I think Netflix should update their movies list. Is it just me or does anyone else agree? [You could say "or does someone else agree", but again this is not stylistically correct.]

Netflix is getting boring!

I love to spend my free time watching movies and series on Netflix.

Unfortunately, what once seemed to be a lot of movies, today I think they aren't more they aren't enough yet.

The most of titles I have already watched most of the titles, or are titles they're not attractive, or very old ones.

I think Netflix should update their movie's list. It's just me or someone agrees?

Hi, I marked what I think has to be erased, and in yellow what to add.