How to execute for a limit 3?

I'm making this minigame where you have to kill at least 1 out of a 3 total iron golems. they all have the same tag, but the execute command just works anyway no matter how many they are. Rather there's 3, 2, 1, I first tried /execute unless entity @e[tag=golem,limit=3] run "command". It wouldn't run at all even with all 3 or 2 golems. Then I tried the command in the screenshot and it's just always active.