This morning I received a mint copy of the Nikon 50 f/1.2 AIS for 290 USD. It is wonderful lens on the D850 and it is so easy to MF even without the focus confirmation dot. I suspect since you have f/1.2 it is very clear as to the point of focus. Here are just a couple quick shots this morning As miss focusing is due to body movement!
D850 50 f/1.2 AIS @f/1.2
As miss focusing is due to body movement!