Look at this pitot tube on a cessna. Does it look as it should or pointing downwards?
In the picture I am in level flight.

Rgs

Patrick

That’s normal.

Pitot tubes are relatively insensitive to small errors in alignment to the slipstream (I remember reading within 15 degrees but can’t place the reference off the top of my head)

Your wing operates through a range of AOA of roughly 15 degrees, so if it is perfectly aligned with the wing chord (or cruise AOA) it will be 15 degrees off axis at stall AOA.

For accuracy across the range, it would seem best to pick an angle somewhere in the middle, maybe 7 degrees nose down relative to the wing chord. For aesthetics and minimum drag, closer to cruise AOA is better.

tl/dr: Don’t worry about it.