Confusing to me how some folks can dismiss stuff as entirely unrelatable.
I was a teenager once, so right off the bat there are going to be similarities in our experience just by virtue of being a teenager in the US, my parents were also immigrants, so that's another part I can relate to.
Can I relate with all of her problems and story beats? No. For one, I was never a teenage girl, so anything specific to that would be something I know nothing about. That wouldn't still not prevent me from trying to empathize with the character. I've never had to deal with a period (touching on the turning red references) but male bodies go through changes too, I can at least empathize on SOME level...sheesh.