What do you actually want to read in a PS?

I’m submitting this weekend and the worst part about having 10+ people reading your application and giving feedback is that you have 10+ conflicting critiques 😪

so here’s the questions:

should activities be patient focused or more about me? —this shadowing— I talked about very meaningful patient interactions I watched, but don’t have the characters to explicitly say “I learned ____ from this” (but referenced the reflection of shadowing in PS)

can/should PS address previous bad grades —specifically if it’s framed lack of maturity/direction and how I felt more confident in school now, even though I have “other impactful experiences“ talking about that time

can my PS also mention the activities mentioned in my experiences section or do they need to be very separate? ^^shadowing for example?