nemozone

$ sudo apt install build-essential dkms linux-headers-amd64

$ cd Downloads/

$ wget https://download.virtualbox.org/virtualbox/6.1.22/virtualbox-6.1_6.1.22-144080~Debian~buster_amd64.deb

$ sudo chmod +x VirtualBox*.run

$ sudo ./VirtualBox*.run

$ vboxversion=$(wget -qO - https://download.virtualbox.org/virtualbox/LATEST.TXT)

$ wget "https://download.virtualbox.org/virtualbox/${vboxversion}/Oracle_VM_VirtualBox_Extension_Pack-${vboxversion}.vbox-extpack"

$ sudo vboxmanage extpack install --replace Oracle_VM_VirtualBox_Extension_Pack-${vboxversion}.vbox-extpack

$ sudo usermod -aG vboxusers $USERNAME

$ sudo reboot

Source:

All credits goes to @AmineTech https://www.youtube.com/channel/UCzL3-V01MvHCCskME3kSFMA