echo "deb http://deb.debian.org/debian buster-backports main" | sudo tee -a /etc/apt/sources.list.d/buster-backports.list
sudo apt update
sudo apt install -t buster-backports libseccomp2
Reinstall/update your OS to a version that still gets updates. * Any distro based on DebianStretch does not seem to have this package available * DebianBuster based distros can get the package trough backports, as outlined in point 2.
RaspberryPI OS (formerly Raspbian) Can be upgraded to run with a 64bit kernel