In real world situations there is little we can do about the anti-maskers, or those who don't wear their masks properly.

Only properly fitting, authentic and new/clean N95's, KN95's and KF94's can protect the wearer from the SARS-CoV-2 virus. Some also suggest wearing protective glasses as there is a possibility that the virus can infect via the eyes.

The idea behind the cloth masks was that 'my mask protects you, and your mask protects me' but that only works if everyone wears it and wears it properly. Cloth masks do work well to stop the exhalation of viral droplets (as the droplets are much bigger and wetter as they are exhaled) but poorly at stopping the inhalation of viral droplets which are at that point dry and aerosolized and much smaller - which only the better masks can stop.