Will my data stay intact if I downgrade from iOS 18 Dev Beta to iOS 17?

I made the mistake of not backing up my iphone 13 before updating to the IOS 18 Dev Beta and now I want to go back to the IOS 17. If I were to turn off the beta update what's going to happen? Will the data be the same as it was before updating? Btw I was on the Public Beta for IOS 17 before updating to the Developer Beta.

[Re-Titled by Moderator]