Is forgetfulness always a symptom?

Hi guys, I'm 27F and diagnosed a little over a year ago after years of being told it was bipolar.

So as we all know, forgetfulness is a very prominent symptom of ADHD. I do forget certain things like payment dates, appointments or shopping lists temporarily but this isn't overly frequent or more than I imagine the average, non ADHD person to forget and it's still always there in the back of my mind.

I'm actually pretty good at remembering details from conversations, certain things that have happened -not just to me but to others- years ago and it's not often I will forget to close a cupboard door for example.

it's kinda hard to explain but if there's something I'm doing or something important I need to remember, I will repeat it over and over in my head until whatever it is is done. So if I'm doing a certain chore and get distracted by something else, I'm fully aware I was doing the other thing and know I need to go back to it if that makes sense?

I guess my question is, I see so many people talking about how with ADHD they forget a lot and it's one of the biggest symptoms or indicators that they have it for them. I imagine like with most things, everyone is different and experiences things differently but it just seems like it's the most talked about symptom imo and it makes me question my diagnosis, even although I have lots of other symptoms. Is there anyone else the same as me?

TIA!