Let's say you're in a roomful of people who are not wearing masks during The Pandemic. Are you any safer if you wear one? According to this article, yes, you are. You're better off not to be in such a room but if you are, Masked is better than Not Masked.
And someone asked me what kind of mask I'm wearing when I go out. My doctor recommended this one and I'm pretty happy with it. I have no idea how it'll do on your face but it's comfy on mine and I like that it goes around my whole head, doesn't hook on my ears and it easily covers my chin. Some of the masks I tried earlier were not so efficient in the chin area.
Minor drawbacks: They aren't the cheapest masks you can get. Then again, maybe this is not the time to be wearing the cheapest mask you can get. Also, you'll feel like the 3M company bought advertising space on your face.
This is the 3M Aura N95 Model 9205. I also wear their Model 9210 which is just about identical but harder to purchase in small quantities. They say it's "disposable" but I'll bet you could wear one for many days and many nights.