It is really hard to "unlearn" habits and shortcuts. I'm reminded about when I started to learn using acrylic paints after a lifetime of using oil paints. I just hated acrylics - until I began to see that they solved certain problems and moved certain processes forward, and gave me creative opportunities impossible in oils. My point is not that Scribus is wildly different from other such programs, but that it takes time to become fluent, and until then, it or any new replacement for a well known tool will feel like a boat anchor. Once you live in it enough, it feels more and more natural.
And, like GarryP says, stay away from the story editor. It needs work.