From my old DIY days it would be to loosen the bottom screws by about 2 turns then tighten the top then re-tighten the bottom, leave the middle hinge alone. That works for a tilted drop - then I noticed "patio".
However, I found this:
https://www.everest.co.uk/doors/upvc/ho ... or-hinges/ now there are so many types and all work in different ways to cure a tilt or a drop.
ETA a tilted drop is when the door is not hanging square in the frame. Another is when the whole door has stayed square but slid down, but that means it is snagging all along the bottom. The whole thing needs lifting using a spirit level.
Unfortunately on our the inner frame had gone out of square probably due to it being left open and hanging there for hours or days on end. That's a whole new ball game.