Something furiosa did that I think directly influenced the failure of the film is the use of recurring characters other than Max. No mad max movie has had recurring characters before which made it more of a story of Max experiencing other people's stories instead of watching the same characters over and over.

By reusing characters the writers really showed themselves to be uncreative and just copying what every other Hollywood writer has been doing for decades now which is 'This franchise was popular. Lets just do the exact same thing again.'

It's easy but its not a formula for success. People are tired of endless entries of the same characters over and over. Just look at Marvel