if it seems daunting, which it is!, maybe it would be a good piont to ask yourself if you really need to run a server and these self hosted web apps in the first place. i did for about 10 years but i realised at some point i didnt need half of it.

if youre planning on having multiple users or want to share one of the services (like real time editing of files or passwords etc) then thats where self hosted stuff makes sense to me, but if not then syncthing can do a lot without needing any complicated setup

keepass is a good example. or note taking apps like jopin or obsidian where the data is store in plain text and where you can choose where the data is stored works great with syncthing

for about a year before i did any self hosted stuff i was running only syncthing on my laptop and phone without any server so its do-able and you can get started right now and worry about getting a server later.

tailscale is a huge help as well and is very easy to setup. say you repurpose an old laptop as a server for now and install whatever services on it, jellyfin for example, you will only be able to access that when you are on your home network but not when you are away, and thats where tailscale comes in. as long as its installed on each device you should be able to connect to your apps/services from anywhere.

basically you can start small and then over the coming months and years as you learn more you will get more confident about moving onto more complicated setups