rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
dnf install https://www.elrepo.org/elrepo-release-8.0-2.el8.elrepo.noarch.rpm
So, install the new kernel.
:~# dnf --enablerepo=elrepo-kernel install kernel-ml
Setup new Kernel to default
grub2-set-default 0
grub2-mkconfig -o /boot/grub2/grub.cfg