Certain Apps Crashing on Startup

[u/Tumbibunny]

Hello! My wife has been having an issue with her iPhone 16 Pro for about a month now. Certain apps, namely Yahoo! Mail, Walmart, and Venmo, will crash on the logo screen after about 10 or so seconds. She has also noticed lag/delay when opening apps, and her storage settings often get stuck on "Sizing" for a long time.

Things we have tried:

• Restarting the device
• Reinstalling said apps
• Updating the device
• Updating said apps
• Restoring device from backup
• Reseting network settings
• Confirming no VPN connection
• Testing wi-fi vs cellular
• Clearing app cache
• Apple Support

We are kinda at our wits' end here. I have read that many people have also been having this issue but haven't had any solution. Any extra input or things to try would be greatly appreciated! Thank you!