I downloaded a debian-live. Unfortunately when I boot from the installation media I don't find any option to try it. All I see is options to install and graphical install. My ubuntu just works fine with settings UEFI and secure boot on.
Problem solved..! actually its the startup disk creator which is failing to select desired source disc image, it kept on selecting the previous one debian net install image which I've tried earlier and that's not changing when I'm trying to change different disc image, so I've created bootable USB with Disks app. Its working now gng to try and install Debian🤘🏻
I found the page hard to navigate: if I click what seems like the correct thing it takes me to a page of torrent files for the non-live installer.
Check the file-name.
The correct ones are in https://cdimage.debian.org/debian-cd/current-live/amd64/bt-hybrid/ (You may need to change the architecture: You did not say)