Trying to install endeavour on a asus proart p16, but everytime I try booting the media it black screens or flickers and wont enter the live environment. I can tty sometimes but that hasen’t seemed to help me at all. I’ve tried all the options to boot but none works.
Welcome to the forum 
Did you disable secure boot in the BIOS ?
yes
Because you don’t give a lot of information, here are some things that comes to mind, like did you do a checksum on the ISO download ? Tried a different USB stick ? Also the Wiki might give you some help ?
https://discovery.endeavouros.com/installation/live-iso-tricks-tips/2021/03/