^^ I installed xanmod and cant seem to get rid of it (it doesnt work with official nvidia drivers), i tried everything I knew to switch back to the default but it didn't work.
Type in terminal :
sudo - i
Provide your password to become a root. Then type in terminal:
dpkg -l | grep linux-image
This will list all installed kernels.
To remove unwanted kernel type in terminal:
apt remove linux-image-number of the kernel you want to remove
Or eventually something like
apt remove 5.7.2-xanmod1
apt remove linux-xanmod
This I think should work.
To update grub.
Additionally install grub customizer. Link: how to install grub customizer
And select which kernel should be loaded as first.