Extend Background feature
Although the Recompose Tool appears to be a fantastic answer to all those images that need a bit of compositional help, I find it clunky and hard to use. You might disagree but, I have to put a lot of effort into the process for any degree of success—and that means it's unlikely to get much use because there are plenty of other, easier features to play with in Elements.
In the new 2022 version, I was pleased to see that the Recompose Tool has been reborn, as it were, as the Extend Background tool, located in the Guided Edit mode. I'm pleased to see this, as a simpler, step-by-step version of the Recompose Tool was needed. And you'll be pleased to hear that it works really well.