If things had gone differently in the DC Universe, the recent season 4 of Superman & Lois would not have been the final installment in the series, and I’m devastated the recently revealed ideas for season 5 will seemingly never come to fruition. With a conclusion that centered around a Superman and Doomsday DC rematch, as well as an ultimate confrontation with Lex Luthor, Superman & Lois ended on a high note. With that said, there were still a number of ideas and scenes that were not used and were considered for a season 5 of the live-action Superman show.
https://screenrant.com/superman-and-lois-season-5-unused-idea-never-see/