Hello,
As the title suggests I am trying to collapse my road outlines to a centreline. Some roads are 15m and some are 90m, up to 130m at wide junctions. When i use the generalisation tool "collapse dual lines to centreline" this happens:


I have attached the attribute table just in case that helps.
This is my first solo GIS project so I apologise if I am missing something obvious. Thank you in advance for your help.