I want to say that your picture is not suitable for wallpaper. One is that the pixels are too small, and you will be blurred if you enlarge them later. The other is that the color is too dark. What I can do is to help you adjust it more clearly and then brighten it up, but if you make wallpaper, you can still see the obvious blurred points. If it's as small as QQ backstage, it's ok.

I wonder if I need to add words? If you make a signature file, I can add words for you. I think it will be better than wallpaper.