why do some video games have regional servers?

dude from atlanta georgia can play with dude from leeds, england in Minecraft
but dude from atlanta georgia can't play with dude from Leeds, england in Valorant

i meant Leeds, srry im from North Korea idk english cities that well

cuz the game like valorant cant have the delay that long

ping issues
im pretty sure ping-dependent minigames on minecraft have regional servers as well

ping issues

cause of delighted issues