Get Wireguard configs from https://account.protonvpn.com/downloads
Commands
sudo apt update
sudo apt install wireguard resolvconf
mv ~/Downloads/proton-de-43.conf ~/protonvpn.conf
sudo mv ~/protonvpn.conf /etc/wireguard/
sudo chmod 600 /etc/wireguard/protonvpn.conf
sudo wg-quick up protonvpn
sudo wg
sudo wg-quick down protonvpn
sudo systemctl enable wg-quick@protonvpn
sudo systemctl disable wg-quick@protonvpn
sudo nmcli connection import type wireguard file /etc/wireguard/protonvpn.conf
sudo nmcli connection modify protonvpn connection.permissions ""
sudo systemctl restart NetworkManager
nmcli connection up protonvpn