It’s Easy to Stick With the Suggestion

You might find that Google Photos’ suggestion gives you the quickest edit you’re looking for. In a photo like this one, the algorithm managed to pick out only the people’s bodies that I wanted to take out from the image to show the landscape. Once you’ve accepted the Magic Eraser suggestions, you’ll have the option to perform additional extractions.
Although I only tested the Magic Eraser feature with pictures from a particular outing, I noticed the feature works best with prominent backgrounds and against patterns that Photos can easily repeat. (You can easily find some bad examples of the Magic Eraser through a quick search.)