I think it is easier to touch your own face less than to wash/disinfect your hands more. When I work retail in particular, I'm going to touch floors and people and all sorts of gross surfaces, instead of constantly disinfecting, I just make sure to wash my hands before I eat. If you shower once a day, use the bathroom at least twice (I've an iron bladder), and eat three time, you are already washing your hands at least 6 times a day... unless they are actually getting dirty, like, (you touched raw meat, or poop, or you picked up dirty tissues) or you have some need to keep touching your mouth/face (like you have itchy eyes, or bite your nails), it seems like 6+ times a day of washing your hands is probably enough.
I don't get sick any more frequently than the average person, so I think my system works just fine?