I'm sorry hon, but it doesn't sound like he respects you and appreciates you.
You're doing his laundry, and he has the gall to complain that you're not doing it right? I did that to my mom when I was a teenager. So she informed me that if I didn't like the way she did laundry, she would be more than happy to teach me how to use the washer and dryer.
Sweetie, this is completely not a case of you not being good enough. It's entirely a case of him not treating you the way you deserve to be treated. You're bending over backwards, making huge adjustments in your life so that he can live the life he wants, and he's thanking you by complaining about how you do laundry.
You deserve better.
“As I am sure any cat owner will be able to tell you,
someone else putting you in a box is entirely different
from getting into a box yourself.” —bisexualbaker