Not sure what type of text editor that you're looking for that goes beyond the basics with the exception of VS Code or Sublime Text, which are IDE rather than text editors.

VS Code does have advanced features as per your programming needs. It takes a little to get familiar with the features, but you should be able to get the hang of it. I've never had any issues myself with VS Code

Not sure what OS you're using, but Notepad++ Notepad Windows are both user friendly and text editors that should handle the basic features you outlined. But then again these are just basic text editors.

So I would try VS Code. Another option is IntelliJ which I also use.