Here is a link to a good repair guide on Youtube.
[link|https://www.youtube.com/watch?v=jyBgIlxP_yI|(215) Samsung Z Flip 5 Screen Replacement - Step By Step Guide On To Fix Your Broken Screen! - YouTube|new_window=true]
I own a repair shop, so I was able to buy the parts for my repair from Mobilesentrix. They are available at Parts4Cells and Injured Gadgets as well. I would avoid Amazon unless you have no other option.