Piece of cake, if your ZIF is damage and removed, you have a free surface to solder the Flex cable.
HINT: Use soldering paste for clean and safe soldering.
Apply soldering paste on Flex cable contact, and put soldering lead to your soldering iron and wipe it to the Flex contact.
Then apply soldering paste to the Motherboard where ZIF was removed. Then put soldering lead to soldering iron and wipe it to the ZIF contact of mobo.
remove the brown plastic at the back so that you can easy see the solder part.