How did I go from simple basic phrases to these complex passages? something seems wrong.
Where are you seeing these complex passages? In a lesson? Practice? Translation?
In any given 'Skill', distinguish the lessons that culminate with 'Learned" from the following lessons that culminate with 'Mastered'. The latter are fragments of writings pulled from the web, and they are not matched with your skill level and are generally above the translation skill level of those of us in this basic German course. There has been much discussion on this problem, but it still exists. Try a few if you like, but my advice would be to work through the course doing only the lessons leading to 'Learned'.