my Imovie doesn't work right

First of when I try to enter my pictures in the movie in a block they continue to come in at the wrong order so instead of from old to new the come in from new to old so since I want the movie to start with the oldest pictures and then end with the newest pictures I have to add one picture at the time, that can take a long time.

At the same time some of the pictures are fine when I see them in the movie library but when I try to add them to the movie they go all black.

I'm using MacOS monterey version 12.6.8

I don't know what happened I used to have a lot of fun making movies of our family pictures but it just isn't that much fun any more. I hope someone can help me.