Automated translation (from Italian)
"Theft Mac
Hello. My MacBook was stolen yesterday. The thieves entered the house.
My iCloud account is different from that of my device. I wanted to know how I recover the iCloud for geolocation and if I can block the Mac in some way."
If Find My was enabled on your Mac, I believe that you would want to log into the Find My Web site using the Apple ID and Apple ID password associated with that Mac. Macs do not have GPS receivers, and can only do geolocation using very approximate means, so I don't know how much luck you are going to have in determining its location. (If you do see a location, do not go there in person to confront criminals yourself. Leave that up to the police.)
If your Mac is lost or stolen - Apple Support
Automated translation (to Italian):
Se Trova il mio è abilitato sul tuo Mac, credo che vorresti accedere al sito Trova il mio Web utilizzando l'ID Apple e la password dell'ID Apple associati a quel Mac. I Mac non hanno ricevitori GPS e possono fare geolocalizzazione solo usando mezzi molto approssimativi, quindi non so quanta fortuna avrai nel determinare la sua posizione. (Se vedi una posizione, non andarci di persona per affrontare i criminali. Lascia che se ne occupi la polizia.)
In caso di smarrimento o furto del Mac - Supporto Apple (IT)