I have been there. The progress was rather slow until I started to use NixOS. The learning curve is a bit steep but is very rewarding. It is not specific to self-hosting stuff, but as a side effect it makes self hosting super easy (declarative, readable, etc).

For most of the services that you would like, you just write a simple configuration and deploy it. For example, to run the service shiori (https://github.com/breakds/nixos-machines/blob/main/machines...), or to host a game (terraria) server (https://github.com/breakds/nixos-machines/blob/main/machines...), or tailscale (https://github.com/breakds/nixos-machines/blob/main/base/tai...). Since Nix is also a very good package manager, you also do not have to deal with installing packages and managing their dependencies.

With my NixOS server I am running all the services you mentioned.

> But I have no clue about networking,

My router is just a bunch of services running on a NixOS box (with this you have absolute control over the firewall/gateway, and it is also good experience to learn the networking stuff with NixOS). Note that before this I know nothing about the networking stuff as I skipped the class in college ...