Time for the facts. The vast majority of new virus variants are generated in hosts who get severely ill. Very few of the vaccinated get severely ill. 99%+ of the severely ill in hospitals in the U.S. are unvaccinated. Hence the unvaccinated are dangerous variant factories.
Variants which are less infectious tend to die out because they are not transmissible. Variants which are more infectious tend to become dominant in a population. Variants which are more deadly increase the misery & deaths in a population. However there is a maximum level where a super-deadly virus effectively is self-limiting since it kills the available hosts (the ceiling is typically around the 33% deadliness level).
Vaccinations are the only path in the long-term to stopping the generation of new variants and the spread of COVID. Masks and other restriction measures provide short-term relief but the way to eliminate the pandemic involves large-scale vaccination as quickly as possible.