Do masks STOP the virus COVID? No.
Do masks HELP you from getting COVID? Possibly. Too many variables to say for each person.
Masks are not magical devices. Nor are they baptized in god-like abilities to keep people from harm. They are cloth, they are paper, they are plastic, they are rubber. None of these materials are magical in any way, shape, or form.
Only a few masks are made to actually prevent you from breathing in or spewing out a virus like COVID. Most of these masks cost over $100 per mask, and the single use ones are only good for a couple of hours at most.
Does the "vaccine" cure COVID? No.
Does the "vaccine" make you immune to COVID? No.
The "vaccine" is supposed to be a metabolic booster for your immune system, to help create your own defenses against the virus. What you believe other than that, is all up to you.
The "vaccine", like the mask, isn't magical. It's a PREVENTATIVE MEASURE, just like keeping yourself clean and things you handle everyday sanitized.
If you are expecting masks to be a magical cure-all, then no.......masks do not work at all.
If you expect masks to assist you in the daily grind of self-protection, then the answer can be yes......if you use the masks properly, as well as properly sanitizing yourself and everything you come in contact with every day.