Is it possible that I have ADD/ innatentive ADHD?

Until today I thought all people with ADHD are hyperactive and loud.

Now that I know that's not the case, I wonder if some of my weird traits are ADHD related.

I also have seen that most people with ADHD had problems at school. I actually had very good grades until university, but I didn't really have to focus that much, it just came easily. With longer and more monotone lectures at university I had trouble tho, I kept getting very sleepy like at the half of the lecture.

I also zone out a lot when talking to people, and I have a hard time doing multiple things at once, like a few days ago I was trying to hold a jar while giving another stuff to my bf, and ended up dropping the jar.

I also read that having trouble with sounds is another ADHD symptom. One weird thing is that I love listening to stuff while I'm drawing (I'm a freelance artist now) but I hate sounds when I study or try to fall asleep (my ex used to watch tv all the time before sleep and it was bugging me a lot lol.)

I also am very forgetful sometimes, especially about dates and names.

I feel like smartphones are causing some of the issues too, because when I was younger I loved to read books but now I can't read books because I keep checking my phone and I just can't focus.