Im having troubles with NA servers

i used to play with 100ms on NA servers overwatch
but for some reason i started getting more than 200ms every game
i get normal ping on other games like valorant
i even get normal ping on EU servers overwatch
its only NA regions i have trouble with all of a sudden, even though for months ive been play 100ms
my friends play on NA so i cant move to eu
the only thing i think that messed it up is when i had a vpn on while my blizzard app was open