iPhone text messages missing and iCloud sync issues after Apple Watch update

Hello everyone. First let me say "Thank You" to those taking the time to read this and a second "Thank You" to those who choose to offer advice/help.

A few weeks ago, my mom was fiddling around with my old Apple Watch to check her blood oxygen or something like that (I don't use it and it hadn't been updated in months?/years?), and on Sunday, August 16th, while scrolling my text messages app for a number to text "Happy Birthday" to someone, I realized that my texts only went as far back as July 20th. I went to iMessages app in settings and saw that it was set to delete messages after 30 days. I have never had it set to that. I have no new apps, no changes, no updates on my iPhone. My mom said the Apple Watch updated itself after she charged it and turned it on. The last time I scrolled for a number was July 23rd and I had my text messages. In any event I went to iCloud control from my iPhone and toggled the screen for the pop-up to state "Disable and Download" messages. It downloaded a lot, but not all my messages. Also according to iCloud, before downloading them back, I had 4,760 texts and after it had downloaded/synced, it stated I had 4,660 texts. [Q#1] Where do I find the missing 100 texts from iCloud, and [Q#2] where do I get the messages back that I'm missing before my messages changed settings on their own to delete after 30 days. Also if it matters, I see some of my texts on my Apple Watch but not all and some of the texts on my Apple Watch are not available on iMessages app. Any advice/help would be greatly appreciated.

My phone is: iPhone 16 Plus // Version: iOS 26.3.1

Apple Watch: Apple Watch Series 9 // Version: watchOS 11.6.2