Thank you for your reply!
[It looks like your mesh does not have enough resolution. You will have to subdivide some more to get smoother results. Also, make sure you are using 16 bit Grayscale images in PSD (Photoshop Document) format for the best results. Don’t use .jpeg images.】
Maximized the resolution of the mesh.
I made a 16-bit grayscale image in PSD format.
1 I pasted the image with poly paint.
2 Mask from poly paint
3 inflate -1
I made it this way.
The dent is rough.
What may be the cause?
Is there another way to create a dent using a texture?