Cleaning & Clutter

I feel like it doesn't matter how much I clean because there is still clutter everywhere. And most of it is kids stuff. I don't mind if they have toys and books upstairs. But I would like my downstairs to be clean. I want to feel calm and peace. So not happening with three kids. The only evidence of kids I would like to see downstairs are photos on the wall. lol But that would entail picking up like 24/7 and I would get nothing else done.