The background distortion behind beauty can be repaired by ps software. First, drag the photos with distorted background into ps software and find the filter tool in the menu bar. The filter has liquefaction option. Turn on liquefaction, select the Freeze Mask tool, and use a brush to smear the undistorted background, so that the smeared place will not change. Just modify the distorted background and straighten it.
Everything behind a beautiful woman's face is deformed. You can import the deformed photos into retouching software or Meitu Xiu Xiu, use the face-lifting tool in the software to pull the deformed things back, or use other tools to change the deformation. However, in order to prevent the things on the back from being deformed during the beauty treatment and reduce the types of things on the back, it is suggested to use a pure white background to reduce the difficulty of retouching. Or you can straighten the background without tools, stick small stickers on the distorted background, or directly block it with mosaics, so that people can't see the deformation of things behind.
It is normal for the background behind beauty to be distorted. You can teach yourself some skills to modify photos.