Ive fastboot challanges described here: Installing OS on the Sony Xperia 10 V - #8 by kongha
Ive searched the forum (for example [SOLVED] Sony xperia 10 v - Linux fastboot challenges ) and tried so many usb-c cables, different parts of usb ports but nothing 
Edit: win11 and driver issue. Booting into linux solved it: Installing OS on the Sony Xperia 10 V - #9 by mettska