Wonder Woman 3 not happening risks giving Gal Gadot's Diana Prince her worst possible DCEU ending. Gadot has appeared in five DCEU movies so far. Those are: Batman v Superman: Dawn of Justice, Wonder Woman, Justice League, Wonder Woman 1984, and Shazam! Fury of the Gods. The actress has also appeared as Diana in Zack Snyder's Justice League, the director's version of the movie, which was released on HBO Max in 2021. Gadot would have at least one more role in the DCEU before possibly bowing out, but Wonder Woman's The Flash cameo was reportedly cut.
https://screenrant.com/wonder-woman-3-cancel-gal-gadot-diana-bad-ending/