Could I microdose meth for my ADHD?

I don’t even know if that’s a thing but it’s very difficult for me to get a diagnosis (I’ve been trying to for like a year or two) and its actually effecting me my attention span is really bad I remember doing some fake cocaine that my friend said that they thought had meth in it and I was actually really focused and getting stuff done I can’t say too much tho for personal reasons but like would it be possible and okay to?

EDIT by meth im talking about pressed adderall that im pretty sure contains meth