How do I make generic shellscript commands for a program installation script?

Question

How do I get commands to accept all possibilities in the code? (Generic)

I am trying to make an automation script to install all the programs I regularly use in Ubuntu 20.04.

In this case I try to add a repository key using wget but it doesn’t work!

keys_repository=( "https://brave-browser-apt-release.s3.brave.com/brave-core.asc" )

echo "Downloading repository keys..." && sleep 1 
for key in ${keys_repository[@]}; do
  wget -q  $key -O- | apt-key add -
done

In this other case I try to add the repositories but it also doesn’t work because I don’t know how to make the most generic command possible!

arch_repositories=( "[arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main"
                    "[arch=amd64] https://packages.microsoft.com/repos/vscode stable main" )

echo "Adding repositories deb..." && sleep 1 
for repository in ${repositories[@]}; do
  apt-add-repository "deb "$repository -y
done

How can I solve?