To install .list file using pkmgr:
pkmgr curl https://github.com/pkmgr/debian/raw/main/lists/default.list
To install .sh script using pkmgr
pkmgr script https://github.com/pkmgr/debian/raw/main/scripts/default.sh
use the following format to manual install:
sudo apt install --ignore-missing -y - $(cat aptlist.txt )