Nowadays, American pop culture is preferred by almost people but for some reasons I dislike it.
First, who are these "almost people" you mention? Chimps? Second, you should list your reasons here in summary form.
When we are watching an American movie and the actress is a beautiful woman, with blonde hair, slim body, and fair-complexion, unconsiously, we think that being beautiful means we have to look like her.
Your example is okay, but, somewhat ironically, treated superficially. Go into more detail about this phenomenon.
For example, fashion, America known as the trend setter of it.
If you are going to go with "For example" here, why not give some actual examples of what you are talking about?
And so on. You need to add more detail and supporting evidence throughout. You have a good outline here, but it is not fleshed out enough for a full essay.