i uninstalled virtualbox in software manager and i see drivers loaded so use rmmod and rebooted but its keeps loading on start and i have very higer cpu usage and i have changed font in grub
Did you install the guest utils on the host?
If yes - remove that package too.
i installed virtualbox trought package manager (aur) i uninstalled it but it changed font in grub and virtualbox drivers keep loading how stop drivers load and how fix grub?
virtualbox package does not change grub
Installing the virtualbox guest utils will do that. Uninstall the package
i now see i forgot remove depencies i do remove and reboot