Missing a positional isn't the world.
Especially in larger group activities like Alliance Raids. The boss will go down anyways and the time it does won't really be noticable if you miss a couple or so.
You still do damage, just not as much but still more than if you didn't hit it at all.

Before I played Melee DPS (played tank from ARR up to Endwalker) the thought of having to position for attacks felt bothersome to me.
But I am having no issues with it at all. In fact it just makes the combat less boring as if I want to perform the best I have to pay attention and stay awake.
That was one thing I didn't really like playing the tank, to always stand still, unless avoiding AoEs.
And for that I always liked fights where there was a lot going on so I had to "dance", as I called it.