With a couple of fiber providers I've been lucky enough (it wasn't luck, I chose housing based on ISP availability) to get a business class gigabit with a static ipv4 address and ipv6 for ~$100/mo, solves lots of problems.
Plex does the plumbing for you, I think NextCloud might too.
Doing DNS just seems like another thing to setup which is just fine. Pay namecheap, then pay a big boy DNS provider (I like dnsmadeeasy) then register some domains.
I don't really want a solves everything tool because I don't see a way for it not to be really opinionated and hide everything behind its own abstraction which isn't really any better than the interface it is hiding. Maybe a series of how-to whitepaper kinds of thing to build up the requisite knowledge to figure these things out.
I'm not a fan of the old school configuration hell where you have to spend hours/days/weeks trying to figure out the correct set of software and config options to do something right, but I'm equally not a fan of completely canned solutions that hide everything in favor of a single button to push. I'm not a technician, I don't need to have everything done for me, but I do appreciate tools where right configuration interface is provided. That is, sane defaults, well documented options, meaningful errors and sanity checking, and options given in the right way.