Yes, there was multiple, multiple times where I made dua for something and it happened. For example, I made dua in class for my teacher to forget me, and she never called me.
we had a presentation where I was not ready yet, and I made a silent dua, and the teacher totally never said "serinity, now it is your turn".
There is a teacher I do not like, so I made dua to Allah to get rid of the subject/lesson and the teacher got sick!

I.e. no lesson! So Allah answered it I think. Cuz I didn't like the way the teacher taught us, and so he got sick.
Allah planned it in a way that surprised me.
There was also a time when I was confused about something, and Allah showed me signs in class, either by what my teacher said, or wrote. Or what the students said, etc.

Allahu alam.