If they went back to doing standalone movies with very loose tie ins (or none at all) to the MCU at large, instead of every movie feeling like a 105 minute trailer for the next movie, more people would see them.
One of the best things to come out post Endgame (for me at least) has been Moon Knight, precisely because it stood by itself with no connection to the MCU at large.
Once they realize that movies can be reasonably successful without having to tie in to one overarching, decade spanning plot, they’ll go back to being good.