cd ~/
sudo apt install wireguard git dh-autoreconf libglib2.0-dev intltool build-essential libgtk-3-dev libnma-dev libsecret-1-dev network-manager-dev resolvconf
git clone https://github.com/max-moser/network-manager-wireguard
cd network-manager-wireguard
./autogen.sh –without-libnm-glib
./configure –without-libnm-glib –prefix=/usr –sysconfdir=/etc –libdir=/usr/lib/x86_64-linux-gnu –libexecdir=/usr/lib/NetworkManager –localstatedir=/var
make
sudo make install
gefunden auf: https://tuxtrix.com/install-wireguard-with-gui-on-ubuntu-20-x/