Is it permissible to create players in football games and modify their faces, bodies, and skills? And is that considered imitating the Creator, making the one who does so an infidel?

Distinction has been previously made between images printed on paper and cinematic or digital photography. The images mentioned in the question are of the latter type, which does not constitute imitation of Allah's creation. Even regarding photographic paper images, there is considerable disagreement about whether they constitute imitation, and their permissibility has been stated. Furthermore, some scholars have opined that the imitation of creation in image-making refers to the intention of imitation, not the act of image-making itself. In summary, it is not easy to definitively assert the prohibition of changing or modifying players' images in electronic games. Rather, the more apparent view is that it is not forbidden, and it certainly does not constitute disbelief.