Try a different flash drive and try erasing the first MB of the target installation drive before installation.
Confirm that you're booting via UEFI.
There's a known issue that it won't boot on a Ryzen 7xxx series cpu.
Also there's a known issue that it has poor support for Nvidia.
You might have a better time asking their community. They link to it in their readme.
Edit: if you're new to Linux, this will be a poor experience. It's basically an early access OS, with missing features and buggy everything.