Buying a house worried about dip in roof

Hi guys me and the better half are looking at this house but noticed the dip in the roof. It’s a Dortmund bungalow and was wondering if any one has any advice

From the pic, there seems to be a crowning problem with the left hip, something not level over the entryway, and a low rafter or two running down to the center hip. I’d get an independent contractor to look over the structural issues before signing anything. Home inspectors that I’ve met are pretty much ignorant.