How do I tell or how should I go about telling my friends I have adhd?

Well, the thing is, I’m not even sure I want my friends to know given some certain things and context I don’t feel energized enough to type out.
But basically I’m 17F and I got diagnosed with ADHD in late march of this year and I’ve been in medication since then, slowly increasing the dosage. It’s a methylphenidate but I think I should have chosen a stimulant, anyway that’s not what I’m trying to ask here.

Basically In middle school I had this friend who just said she had adhd really nonchalantly, and even then I had suspected I might have it as-well. But in that moment I really liked how she just said, not looking at anyone’s reaction,I’ve never really thought it was a big deal, but only now am I just coming to realize how much it may have affected almost all the different experiences and relationships I’ve had in my life.

ALSO just a quick thing to point out this friend also had a therapist, so maybe they were able to guide her on what to do.
*i don’t have a therapist but I’ve been looking into getting a consultation with one.

Anyway on social media I’ve seen videos, talking about or just relating to adhd. I’ve reposted them but then quickly thought “would I be okay with someone I know just asking me about it randomly?” And then quickly removed the repost. But the thing is I want people to know, but I don’t want to explain anything.