I would recommend RethinkDNS instead of NetGuard, it has the same firewall capabilities but it also lets you change DNS (with Dnscrypt / DoT / DoH) and also lets you connect to a Wireguard VPN. It's amazing.
Ty so much for showing how. I managed and did it. Do I need to run protonvpn as well? Not sure what comes next. First time using Rethinkdns but I have both installed on my phone and from I can tell I can only use one vpn app at a time.
Yeah Android only lets you run one VPN app at a time, you just need RethinkDNS because it acts as a firewall, (proton)VPN wireguard client, adblocker and DNS resolver
I think I now got it, in the wireguard profile I added an app I wanted to use this profile and checked online for myip and it didn't show mine. So basically, since Android let's you run 1 vpn service, rethinkdns can do this by adding a wireguard profile from a different vpn service like protonvpn in my case. This is very clever and convenient. I hope my understanding is correct.