If your not mechanically inclined by your mid-life, you never will be. It's learned and practiced over the years by watching (helping) you father, uncle, neighbor, etc day after day, year after year. Struggling to keep a 15 year old car running, doing your own brakes, picking up parts from a junk yard.
Your a tradesman first, electrician second.
I once hired a 35 year old guy whose father was a master sparky, thinking he would pick it up quick. He quit in two weeks - wasting my time and his. Too hard to go from selling insurance to working in attics as a middle aged noob.
I won't try it again.
