Hi Luciano,
Sorry to say that iFixit doesn't have a screen replacement guide for your phone, but I found a Spanish site called Nadie Me Llama Gallina that does.
[link|https://www.nadiemellamagallina.com/en/manuales/smartphones-1/lg-11/lg-k22-1264/pantalla-completa-11267|Manuales / LG K22 / Fullscreen|new_window=true]
If you feel like contributing to iFixit, you could author your own guide to that repair and help out the rest of the repair community.
[link|https://www.ifixit.com/Guide/new|Create a new Guide - iFixit|new_window=true]