How to bypass apt not installing packages

if you run sudo apt-get update

you'll get this shit.

20 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: Failed to fetch https://deb.opera.com/opera-stable/dists/stable/InRelease  Something wicked happened resolving 'deb.opera.com:https' (-5 - No address associated with hostname)
W: Failed to fetch https://deb.parrotsec.org/parrot/dists/parrot/InRelease  Something wicked happened resolving 'deb.parrotsec.org:https' (-5 - No address associated with hostname)
W: Failed to fetch http://linux.teamviewer.com/deb/dists/stable/InRelease  Something wicked happened resolving 'linux.teamviewer.com:http' (-5 - No address associated with hostname)
W: Some index files failed to download. They have been ignored, or old ones used instead.


So how to bypass this, all you do is (for parrot users, start anonsurf, then open terminal, and run the update command, will work fine) Other deb users, add a system proxy, then run command in terminal. I don't know another fix other then reinstalling. If i find a perm fix, i will update this paste.