@raulvictor19, these sources look like they were cropped and downscaled from larger images. We have been accepting cuts in 250x250 for almost 4 years now. Do you still have the original sources - best to recut them, and do so by cropping them no more than 2-3 pixels beneath the chin.

Have a look at this thread for more guidelines and video tutorials on what we expect for from our cuts. Pay attention to the requirement of needing collars for all cuts, as shown in the respective video tutorials.

The below is a tutorial on how to use remove.bg and photopea.com: