Using wallpaper is a great way to add character and personality to your apartment.
But you can also consider alternatives such as fluid wallpaper here https://www.wallmur.com/wallpaper/abstract-wallpaper/marble-wallpaper, they are created using a special mixture of water, resin and pigments, which is applied to the wall in the same way as traditional wallpaper. However, unlike traditional wallpaper, which dries and remains static, liquid wallpaper is designed to flow and move over time, creating a unique and ever-changing pattern. This can be an interesting and attractive solution for your interior. So, I suggest you give it a try.