@AITOR GALLEGO These source images you've posted have been upscaled and are pixellated/blurry. Instead of upscaling them, you can get the original high quality images from the La Liga website:
Go to the team's page on the website (e.g. https://www.laliga.com/en-GB/clubs/ud-almeria/squad) and click on the person whose image you want to request (e.g. https://www.laliga.com/en-GB/player/rubi)

Then right click on the page and choose “View Page Source” in the right click menu (or press Ctrl+U if you use Chrome/Firefox), this will bring up the source code of the page.

Then, press Ctrl+F and search for “2048x2225”, which is the largest image size on the page. You should find an image URL like this one which you can then request as a source image to be cut:
https://assets.laliga.com/squad/2021/t1564/man41703/2048x2225/man41703_t1564_2021_1_001_000.png