how to manage userscripts

[TRS-80]

Unfortunately, I think that some familiarity in one or more scripting language(s) would almost be a prerequisite to using something like SXMO (or dwm it's based on, or other similar tools following Unix and/or Suckless philosophy).

That's going to be a step learning curve for any newcomer, however the more you learn the more control you will be able to take back over your computing. Not just on phone, but anywhere GNU/Linux runs (desktop, server, Single Board Computer, etc.

If you want to learn about bash, I can recommend just hanging out in #bash (on Libera IRC network), and studying the Wooledge FAQ they have linked in the MoTD.

Python is another candidate, but usually this is for more involved things, as you are potentially getting into Object Oriented (OO) paradigm which may really be confusing to a newcomer. Probably best to stick to simple, imperative languages like shell scripting at first.