Recently I saw one video regarding using custom DNS with VPN. As the video concluded about using rethink DNS inside the IVPN. I have another idea here to solve this issue.
I am using Rethink DNS app using NextDNS, now inside Rethink DNS app there is a wireguard Proxy option. Here we can add the ProtonVPN which has free version and save the day. Also there are many other features as well. Please try this out and lets discuss about it here
There are already similar topics (here and here) where we’ve discussed it plenty. Rethink with WIreguard proxy is a great setup.
Be aware that at the moment if you use NextDNS then it’s gonna see your real IP address. It also used to use DNS servers close to my real location, not to my exit point, but i just checked it and it seems to have fixed itself.