I can’t do it and I’m lost for answers

6 years of high school and now uni and my god I just haven’t been able to study or listen at all. I have bullshitted my way through years of school and just prayed that hopefully I would change and be able to even listen in class but I can’t. The only reason I absorbed anything in high school was because every time I zoned out I had a teacher to tell me to pay attention, now I’m in uni and I just cannot be present mentally for these lectures. I’m losing my mind and I don’t know if my dopamine is just fried beyond belief or if I have adhd or something idk I’m losing it.