@Pedro Ferreira de Fonseca, the edges are a bit too jagged and it's cropped too far from the head. This thread contains guidelines for what we're looking for in our cuts in terms of dimensions, snow, collars, face orientation etc. and video tutorials for each element.

If you want to give it another go yourself, I would recommend using remove.bg, which is a free online tool which removes the background to an excellent standard, for free and almost instantly.

Here's a couple of videos on how to use it, one when combined with Photoshop and another using photopea.com, which is a free online app so close to Photoshop that it has the same shortcuts, layout and icons.

If you don't have Photoshop, photopea.com is the tool I would recommend to use to tweak the draft cut produced by remove.bg. It's more powerful and versatile than GIMP and other similar tools.

EDIT: Remembered what to do.

Any ideas what I may have done wrong? I've added this to my current megapack and it hasn't appeared when reloaded

He has different id number in game this is his unique id 2002042162 in game

That is not the correct UID for FM24, but most probably the UID of a player added to FM23 via an editor data file.