I have three methods to choose what I watch. It depends on what you actually want to get out of those shows.
Friend recommendation (To have something to talk to):
A friend who lives in Ireland just told me about this show called Derry Girls, which is about some girls from Ireland. I think he heard it from some of his coworkers, so in his case, it's probably like a topic of conversation or something. I remember back when I used to work in an office this guy recommended me an anime called Yowamushi Pedal, it's about bikes (Amazing anime, totally recommended if you like sports anime), anyways I started watching it because of him and we had some conversations about it.
So those two shows were recommendations and were like conversation starters, so basically shows that I watch because I got them recommended, I liked them (of course I wouldn't have watched a 100+ anime if I wasn't into it lol) and talked about it with my friend in the office.
Critically acclaimed:
This is how I choose mostly what manga to check out next or series to watch. Go to imdb in case of series and check the top rated tv series or episodes. (Don't mind the indian Tv series, those were just people from India spamming likes). In case of manga or anime go to myanimelist.
The problem with this method is that maybe the types of shows won't be your thing. Like Breaking Bad can be the top rated show of all time, but if you don't like drama-thrillers... Well, you probably won't like it.
If you are for example looking for a comedy, look for the top rated ones, even within the top rated comedies which are probably Community, the office and Friends, you should check out an episode of each and see which you prefer. Their humans are super different and yet I enjoy all three of them.
Current hit:
Not too difficult to understand. It's currently trending shows.
I like to engage in discussions online, and sometimes watch theory videos or stuff like that. Which is not possible for netflix shows due to their binge model which I kinda hate lol. But it's doable for series that are still weekly like The boys.