From what I understand, me wearing a mask probably will not protect me from catching the covid-19 virus. But If I have the virus and cough or sneeze, it will help other people a lot by keeping the germs near my face and they will not travel several feet from me. Thereby helping keep others from catching this disease.
I have read what others have gone through when they have been sick with covid-19 and do not want to find out for myself if they are being truthful or not.
The only cure/help, as I see it, will be when a vaccination is available for those willing to be vaccinated. Even though I know several people who don't get the flu vaccine I hope most of us do.