@Lub12, when you use remove.bg, it's important to crop the sources beforehand because the preview images come out in around 500x500 size. For sources like this one (and the Kotrba one) in which the face is only a relatively small part of the source image, that means that the final cut will end up not being as crisp as it would be if a cropped version was put through remove.bg

I've re-opened these 2 requests so that they can be re-cut with the above in mind