Won't boot to install

So I downloaded the ISO wrote it to USB and then booted from the USB. The problem is it just shuts off and reboots itself. I never get to where it will. Let me install it. I don’t remember what version I have was one from the website in the idea. What’s wrong thanks

What iso is THE iso ?

likely something went wrong with creating the bootable USB.

try a different thumb drive and download the .iso again from the official website for your distro.

if you have a poor internet connection you may want to be sure to verity the checksum value matches what is shown on the website to ensure your download proceeded without error.