Get world player is in

I'm trying to execute things depending on what dimension the player is, I'm trying this:
execute as @a at @s in minecraft:overworld if entity @s[distance=..0]
but the problem is: it is returning true on the end
do y'all know why?
PS: doing execute as @a at @s in minecraft:overworld if entity @s[x=0] seems to return true on every dimension (didn't test a lot)