Download the ISO file for the operating system you want to install
Insert the USB drive into your computer
Back up any important files on the USB drive
Open a USB bootable creation tool such as Rufus, balenaEtcher, or Ventoy
Select the USB drive in the tool
Select the ISO file
Choose the correct partition scheme and file system if required
Start the writing process
Wait until the process is complete
Safely eject the USB drive
Restart the computer
Open the boot menu or BIOS/UEFI settings
Select the USB drive as the boot device
Save changes and boot from the USB