iMessage stored in iCloud
Almost half of my iPhone storage was messages that are important to me of which I want to keep. I had been struggling with storage on my phone for a few years and in an effort to free up some space, I learned of "Messages in iCloud" in a way to offload messages. I read the description of this feature and understood it as photos where my messages are in the cloud but if I ever want them I can go re-download them. I did this and I now have an unbelievable amount of storage so I thought it worked. Today, I tried to go look at an old message and it wouldn't show. I then tried to look for, in general, any past messages and they weren't showing either.
Am I doing this feature wrong? Is there another way to access old messages? Right now I'm worried that all these messages that I wanted to keep are now gone and there's no way to access them. How do I look at these messages? Is the only way to access my messages is to re-download them back onto my phone's storage (assuming that's possible)?
iPhone 13, iOS 18