You are conflating ADHD as something strictly affecting work. It does not only affect work, it affects your whole life.
You wake up and need to make your bed, but then you also have to take a shower, and brush your teeth, there's also laundry to do, and coffee. Maybe breakfast if you are hungry, but there's also mail to pick up, and emails to read, and plants to water, you also need to schedule a thing after work, and there's also a message from your parents to reply.
All of those things are ringing out loud "I need to be done" at the same time, with the same priority, you know you should just start with one thing but you can't, you simply can't, the other things are like loud alarms going in your head to not be forgotten. You feel overwhelmed, you take a shower. One thing done, you make coffee, you drink it and feel you need to go for a walk to clear your head, you come back home and drink a bit more coffee, oh, but I forgot to brush my teeth when I was in the bathroom, and now I know I shouldn't brush right after drinking coffee, you wait a little bit for the sake of your teeth, you forget about it again.
You go through your day, you remember you forgot to pick up the mail, you go to pick up the mail, you see your front yard a bit disorganised, you start putting things in place, you go back inside the house and remember you forgot to pick up the mail.
You don't make breakfast because many distractions took your time, you start working, you force yourself to focus, you do the work even though other things ring in your head all the time, you finish work and now you're exhausted.
You do other day-to-day things, you cook, etc., time for bed, now you remember all the things you forgot to do: you didn't do laundry, you forgot to reply your parents' message, you forgot that you booked an appointment for tomorrow morning. Oh, you also forgot laundry, for the 2nd week in a row, you do it because tomorrow you won't have clothes, so the urgency makes you focus and prioritise it.
It's a constant, never-ending stream of remembering, forgetting, overcommitting, self-guilty, no matter what kind of organisation ritual/system you try you eventually fail, each failure feeds back into the guilty, into the shame.
And it's constant, every single day of your life, in every single activity you do. In conversations, at work, doing daily chores, everything takes a lot of effort to be focused, to do what you are supposed to do.
So maybe life isn't for me, should I just off myself?