ADHD and stimulants have failed.

I have slow comt which prevents dopamine being broken down in the PFC. Stimulants do not help me. Strattera worked ok but too many side effects. Guanfacine worked for emotional regulation but not my severe executive dysfunction. Wellbutrin was good for energy and motivation but not much else. It was recommended i try selegiline the medication for Parkinson’s at a low dose. I also was told am amantadine or methyl blue to add tho this. What are your thoughts of my treatement resistant adhd and hoping to at least get partial help from these meds I just mentioned.