Balena Etcher is software to flash Operating System images to USB drives and SD cards. It works well.
Normally it is offered as an AppImage, but it is also possible to add the Balena Etcher github repository and install as a .deb file from there.
Installing Balena Etcher on Debian with apt
curl -1sLf 'https://dl.cloudsmith.io/public/balena/etcher/setup.deb.sh' | sudo -E bash sudo apt update sudo apt install balena-etcher-electron