Welcome to the forums,
there are several possible problems you may be having,
as eluded by
@kc1di did you tick the box for installing nonfree drivers when you tried to install,
what application did you use to burn the ISO to the pendrive [Rufus is known to be problematic, try Etcher
https://www.balena.io/etcher]
use a good quality branded pen-drive [old/worn budget ones they are fine for normal use, but known to be unreliable with ISO's]
for a general guide to installing, see my signature
If it's a Windows 8/10/11 machine, make sure you disable fast boot [usually in the BIOS] and secure boot then re-boot the machine before you continue.
if you have driver problems after a successful installation, we can guide you through the necessary fixes.