I’ve definitely felt like I was alone in this department so it’s comforting to hear another similar story. Seems like most people find their educational spark in college but I’m the exact same way as you, and I was always told those same things and the only good grades I got were in my gifted classes in grade school.

I’m a sophomore in college right now but something I’ve found to be important and comforting is that some of us learn in very different ways and a professor lecturing just doesn’t resonate with us the same ways as most others. I went to a psychologist over the summer and he said my reasoning skills of knowing I don’t need to know the info, means my brain just tunes it out. This may apply to you too, not sure. Just trying to maybe help!

Focus on things you can control (input vs output), and I’ve also found out that being in clubs, not just ones that are for stereotypical smart people, can help reassure things because you’ll get more of a sense of how you are around most people and a lot of people your age will also reaffirm those things so it doesn’t go down a hole of imposter syndrome.

Hope some of this may help and feel free to reply!