Landlord, this method only applies to a picture with many watermarks on it.

And the monochrome background must have a watermark. At this point, use the selection tool to select the watermark on the monochrome background. After processing, it can be used as a matrix to process other watermarks.

Or you have a watermarked original image.

There are many methods to de-watermark, and each method is only applicable to a part of the photo, so it should be applied flexibly.