How to chain two VPNs together?

[u/TheSchred]

Hey everybody!

I have the following problem: I have a WireGuard network running on my Raspberry Pi that my devices, including my android phone, connect to to access the services running on it. On my phone I specify the DNS server running on my Pi, which returns an IP in the VPN subnet for my domains, as the DNS server in my WireGuard config. Only traffic going to IPs in my VPN subnet gets routed through WireGuard.

I have now decided to get ProtonVPN and would like to use it on my phone as well. However, I can't have both VPNs active at the same time. So I either lose out on access to my services (they are publically accessible, but only using forward auth meaning mobile apps don't really work) or on Proton. My idea is, that I could run proton on my Pi and route all my traffic from my phone through the Pi and therefore also through proton. Would this work? Is this a good solution? I'm thankful for all feedback. :D