I mean on the DNS provider like cloud flare. In yunohost it is very easy they have done amazing work on it.

Yunohost is a couple of clicks and done. The only problem is you need subdomains to put the apps on so you need to know a little about DNS.

I think the question is why. You have librapay or open collective. I think the requirements for finncial services put too big a burden on doing it and there are already established solutions for it.