Has anyone else restored an iCloud backup to a new phone and then lost all of their reminders (even though they were supposed to be included in the back up as well)??

I just had to replace my iPhone 13 Pro when it died and when the replacement phone came I had no problem setting it up, other than my reminders app did not back up correctly. I was able to get it loaded on my phone but it was a version from a couple of months ago. I tried resetting my phone again after speaking with some support in hopes that a different iCloud backup date might include the reminders, but when I did, NONE of my reminders came back at all!! is it because I had to do a software update and it somehow got lost in the mix? does anyone know how I can get them back?