> So I would ask for recommendations on similar tools. Not bare Docker containers but fully lanaged platforms wirh one click installs where it is easy to add/remove users.

I've done a similar journey for my self-hosted stuff, started with Sandstorm, moved to Yunohost, but got frustrated with the configuration, and how different every package was and eventually have landed on using NixOS for my home servers. It's not a "fully managed platform" in the traditional sense, but if you're a developer, that's almost what you get. Adding new services is usually just adding the configuration for them.

Bit of a learning curve learning the language, tooling and ecosystem, but once you're over that hurdle, having all declerative configuration in SCM together with easy linking of configuration options together (define service ports once, reference them in other services, for example), and everything being easy to rollback, have been a god-send so far. Been running it for maybe 2 years or something by now, with more or less zero issues besides the ones I introduce myself.

Adding/removing users can be as easy as adding/remove one line of configuration, and redeploying. Simple enough for me and my family so far.