Unable to boot from Ubuntu 20.04.02 live usb

I have Dell XPS 9500 and I am unable to boot from live-usb created via Rufus (or via regular 7z x ) whatever partition option I choose (MBR/GPT) neither disabling secure boot seem to work. I have an older Manjaro image which works just fine with secure boot turned off. Could you think about any solution to replace existing Manjaro installation with Ubuntu? Thanks.

I highly recommend Universal USB Installer instead of Rufus.

I had the same issue with my personal computer, tested many solutions that didn't work, and finally that software solved it.

EDIT: I don't recommend to use Universal USB Installer anymore, here is the reason: USB flash installation medium