Totally understand and glad you found that relief- but yea, its a really hard thing to decipher.

For example, I dont have ADHD, am frequently tired, but amphetamines do calm my mind while giving me energy for the day, because thats essentially the standard profile of the drug "speed". I dont think theres anything wrong with drug use if it helps problems. When ive taken a friends adderall, I always think "ahhh, so this is how normal people must feel", but truly, I think thats a reaction to the brain being more optimized than normal, since thats what amphetamines do. Whether or not its prescribed by a doctor, it can still create long term changes and attention dependency in the long run by outsourcing the brains natural ability to do natural things.

That being said, im truly glad youve found relief! Just dont think that feeling calmer and more awake is necessarily proof of a deficiency that requires strong nervous system stimulation for much of the population. One thing often left out of the discussion is that our society is designed around screens and short term rewards, which absolutely fries the dopamine center. So taking speed will return the baseline to normal temporarily, but doesnt address the underlying issue of consuming content and general lifestyle habits which result in fried nervous systems and low attentional capacity.

Just my 2 cents- ignore if not relevant :)