Good Looking, but horrible usability

I really like the design, which is why I decided to use this theme for my new website. I wasted the whole day today trying to personalize even the simplest things.

• The template functions are totally confusing and overloaded (what do I have to change where?)
• If I change the template I can’t preview it, so I can’t even check if the change would work. Example: Design the menu on the desktop page differently than in the mobile view.
• With other themes you click through the customizer and then you have a theme as you would like it, here you have to change something here and there, but then again it doesn’t have an effect everywhere.
  The whole thing has really become far too complicated. I’m afraid that the Block Editor has really lost its way and too much time has been invested in it to go back. In my opinion, it is not a good product for the end user.
  Professionals will code their own themes anyway and the “normal” user is overwhelmed.
  If I, as a quality manager, had to audit the organization in terms of ISO 9001, I would clearly say that products are being developed here that do not meet customer requirements.