Existentialism

[Belacqua]

For some reason I have always felt identified with this philosophy, even though I have never read any of its main works 😅

But once I read the definition, I want to learn more about it.

I understand the feeling! It has an appeal up front that a lot of other schools of thought don't have. 

Maybe something to do with the cool French girls? 

Even if you end up growing past it, it's always worth learning about. 

Being and Nothingness is hard. Not for the faint of heart, and you're expected to know a lot of the prerequisites. Like a working knowledge of Heidegger is helpful. Fortunately there are less daunting ways in. The OP mentioned Existentialism is a Humanism a while back -- that's a good one.