Sorry for that, but yes you would go to settings(in bottom left corner) and under java edition settings you will see ARM java Runtime
According to your description you are on a MacBook Pro 2021 which i'm guessing has the m1 chip inside. This is an arm based processor and therefore Minecraft launcher enables "use ARM java runtime " by default. Disabling this should allowed you to start a 1.18.2 instance.
If your issue is solved I suggest closing the topic