Very simple GUI for non blender users with Python

I want to have a very simple blender GUI which will only have my panel and 3dView and the timeline and all the rest will be hidden using Python. I’ve checked the answer found here but it only hide the panels except the RunScript (not sure why), and also checked this link but it doesn’t work. I want to hide the rest everything, except my panel, 3d View and Timeline as the user will be very basic with no knowledge of blender at all so I want to hide everything except my panel and I’ll be providing all what the user needs in my panel.

not certain I suppose you are looking at a lot of work here !

but one way would be to modify the UI scripts in the UI folder for blender
and then how will you access all the tools ?

not an easy task !

happy bl