You are looking at this protection thing from the perspective of avoiding infection from others. That is not how it is suppose to work. The purpose is to protect others from what you have. You may be asymptomatic and be a carrier. Before entering a public area, wash your hands, use hand sanitizer and use disinfectants spray to spray down your grocery cart ...
Aren’t you forgetting the pantyhose under your double mask set,
https://www.cdc.gov/mmwr/volumes/70/wr/pdfs/mm7007e1-H.pdf
the face shield over all that, and then the gloves and booties, like I’ve seen at WalMart?
Thanks for the link. It gave instructions on how to get a better fit for my mask to improve its performance.