After washing your hands before you how in the hell are you supposed to exit the bathroom? Touch the door knob with your clean hands?

No if no automatic door plz use a paper towel, there are plenty in the restroom.

Thank you, Mr. Jones, we do have hand sanitizer right before you enter the dining area, I will put another one right after you come out of the bathrooms. Thank you again, Mr. Jone, for the suggestion.

Use a paper towel.

Use a piece of napkin/tissue..that's what do. Simple.

Yes paper towel never fails in that situation

May I suggest on the outside of the restrooms a container dispensing a solution of: Wild Oil of Oregano, Olive Oil, Hydrogen Peroxide, lemon juice and water to thin it out. So persons leaving the restroom can safely sanitize their hands before enjoying the ambience and very tasteful dishes ordered and prepared.