What was the "angle adjustment" that you tried?
Do to how the hinge moves and all the geometry changes during it's full travel, the adjustment procedure is kind of backwards from what you may think.
When the hood sticks up that far, you start with the "drastic measures" adjustment procedure. Don't bother with trying little movements at a time. The purpose of the peg on the cowl also needs to be understood. It is not supposed to be a stop point for the hood. It is actually supposed to catch inside the rear corner of the hood and keep the hood from going through the windshield in a frontal collision. So, if the hood doesn't travel low enough while closing, it will miss the peg and end up on top of it, which in turn keeps the hood from setting down all the way, no matter what the adjustment is.
So the first thing to do is remove the peg. Not permanently, just for the adjustment. Then loosen up all three bolts that mount the hinge to the fender. Then have a helper open the hood as far as it will go and then some, the goal being to move the hinge and take up the slack in the mounting holes. While the hood is being held open as far as it can possibly go, tighten all three mounting bolts. Then close the hood and see how it sits at the rear. If the hood still sticks up past the fender, the hinge is definitely shot. But if the hood sits how it should, re-install the cowl peg and close it again. If the hood still closes properly, that's great. If it's not wanting to, adjust the installed height of the peg until it intercepts the hood how it is supposed to.