https://www.sewingpartsonline.com/?m...Parts%20Online
Sewing Parts Online has been helpful to me when I didn't know exactly which part I needed.
https://www.sewingpartsonline.com/se...sser-feet.aspx
This page gives examples of the types of pressure feet. If you can figure out which one of them is like the foot on your machine, then maybe they can tell you which of the 100+ zipper feet that they have will fit your machine.
https://www.sewingpartsonline.com/se...sser-feet.aspx
This appears to be the same machine. It may help with ordering the zipper foot.