Ok I solved the zoom issue thanks to
@K3Z4
Editor preferences: Viewports - Minimum Orthographic Zoom
Default is 250
I set it to 1 so now I can zoom in to basically micrometers.
Now I can zoom in enough but the issue is the grid does not show mm’s, it stops at cm’s -
This should be the most basic of options in your face on the viewport, I don’t understand, like, it’s a grid, you should be able to change it easily without plugging in custom values in a buried random setting.
I understand the Grid Snap settings is how you change the Grid but this is bugged or something, doesn’t change it.