Welcome
I dont think a diagnosis is absolutely necessary, but I found that it helps your therapist to have a diagnosis if you go to therapy. I really hope we can b a help to you, whether it be a listening ear or advice, friendly acquaintences.
My daughter was diagnosed in the 4th grade. She is 16 now. The psychologist told us the symptoms and asked if either of us had similar symptoms. The light bulb came on in both our heads that I fit the symptoms more than my daughter, but I did not press the issue of getting a diagnosis. Then as the stress of my job and of being an aspy parent got to me and I realized I needed health, I went to therapy and tried lexipro, both of which were disasters. I tried to go on my own, but then came back to get a diagnosis and a new therapist. I think I am back on the right track now.
My hobbies are video games (pokemon) and dungeons and dragons, reading fantasy, and taking walks with my wife.
Hope you like ti here.