Did I make a mistake ?

[Jijane]

I got rejected by my classmate. She said she wants to focus on study, I said it's ok and great that she is serious about study. Then she said we can be friends though. I replied Yeah
Then idk why I asked about her academic and weather she is learning any skills.
I don't have any expectations from her and I won't even text her again ig. Just thought that it would nice to ask her about her study before leaving.
Did I make a mistake? Should have I just left after saying yeah ?

Classmate? Sorry what? Did you ask her out/him out?

Bit of an ambiguous post sorry. I don't get it.

We need a bit more context. She said "let's just be friends" can't friends ask about study then? Or is there more to this?

It would have been better to leave a space before messaging again. If you just keep talking it feels as though you want her attention and she’s said she wants to focus on her studies.

It's just that I immediately asked her that after she said she can be just friends

There are no ‘shoulds’ here. I wouldn’t give it a second thought.

It’s not a big deal but I would say - if she’s told you she wants to focus on study, then it is better to step back rather than ask questions about her study. In asking more questions, you were asking for more of her time and attention and she’s indicated that she doesn’t want to give you that. But it’s a small point and not worth fretting about. Just step back now and don’t ask her anything else.