How To Enable Or Disable iMessages On iCloud

To anyone wondering, This is fake. This lady releases videos of her class room of kids freaking out all the time. this guy is in a bunch of those videos

I want my all messages on my iPhone and my iCloud. Why didn’t they transfer like they always have? Do I have to choose whether they stay in cloud or can all be on my phone?? And if so, do I keep the toggle off and hope they download?

Thanks! This has been exactly what I've been looking for. I've been wondering if tapping "Disable and Download Messages" would delete my messages on iCloud and the phone or just iCloud. Finally an answer! Just on iCloud!