This is pretty important given the poor international spread of vaccination.The real answer is to stop the type of vaccine nationalism you and people like you spout and get the whole globe vaccinated.
It was discussed recently with the UN, IFRC and WHO that because of how poorly the spread of vaccination has happened, and given the rate of mutation, it may always be endemic in different parts of the world.
There may be localised, national herd immunity through vaccine (not a given) but different strains will continue to pop up until there is much broader international vaccination.
Five reasons why COVID herd immunity is probably impossible
Even with vaccination efforts in full force, the theoretical threshold for vanquishing COVID-19 looks to be out of reach.