Decalify
add-on
Decalify is a Add-on That Uses Blender 5.1's RayCast Node and projects the decal on to the surface taking the shape of the surface even if it's displaced. Decals will look strached on fully curved/rounded surfaces "will soon update it" (ONLY Cycles)
$5
$4.25
Watch the video Below to Know More About How Decalify Works