According to Q-FFF theory, The origin of UDFs Ultra Diffuse Galaxies and galaxies without Dark Matter is created at a new physics white hole created between multiple external GABHs ( Galaxy Anchor Black Hole) still unobservable. perhaps by the JWST.
Zoomed-out Hubble view of NGC 1277, which lies near the center of the Perseus cluster of over 1,000 galaxies, located 240 million light-years away from Earth. (Image credit: M. Beasley(Instituto de Astrofisica de Canarias)/P. Kehusma/NASA/ESA)
Below: NGC 1052-DF2, an ultra diffuse galaxy. (UDF) located near the Galaxy cluster: NGC 1052. which seems to be the origin of the galaxy.