My doctor doesn’t believe in ADHD

TL:DR - My doctor doesn’t believe in ADHD diagnoses. If you’re in Canada and got your diagnosis as an adult, how did you go about that process? I came to my doctor with concerns that I may have ADHD. The first thing he responded with was that everyone thinks they have ADHD, he gets about 20-30 a month, and that psychologists aren’t even doing diagnoses anymore without school report cards confirming struggles. He even got me to fill out an ADHD questionnaire that he never contacted me about the results. I live in Canada and the doctor shortage is insane, it took me 2 years to finally get a doctor, so I can’t just switch. They literally get assigned to people. Anyone in Canada able to tell me how they got their diagnosis (as an adult- I’m 37). I’ve looked into paid diagnosis, but am sceptical because $600+ is a lot of money for something that I may or may not have. What is the diagnosis process like and what do they do? Can an online psychologist do this? There is only 2 psychologists in my small town. Seeing so many symptoms of adhd online is tough, I know just because I have some symptoms doesn’t necessarily mean I have ADHD, but it’s like EVERY single thing I see I’m like “I do that”.