Is there a way to add like a coordinates bar in the corner of my screen without having to have the entire F3 menu just blocking and distracting my vision? And I'm looking for how to do this in vanilla not modded.
If you literally mean just the coordinates then you are out of luck, but if I recall there's an Option that truncates the F3 screen into a much smaller version (it does not go all the way down to just coordinates, though).
Mods can do this, but I couldn't tell you which mod. I have enough trouble just trying to figure out what obscure mod does what.
Perhaps, and I have zero idea if this is even possible or if it's even been done already, a datapack can do what you want. That would only work on 1.13 and later, though.