The repository 'http://ppa.launchpad.net/allegro/5.2/ubuntu focal Release' does not have a Release file.  Updating from such a repository can't be done securely, and is therefore disabled by default.  See apt-secure(8) manpage for repository creation and user configuration details.

The Repository 'http://ppa.launchpad.net/smc-packages/ppa/ubuntu focal Release' does not have a Release file.