iPad OS 26 issues with only Apple Apps

I only updated on my iPad and have had issues with Mail, Messages, Phone, Contacts, and Calendar apps. Chatted with customer support and they said this was not a known issue. They had me reset the network settings, which did get the apps to stop freezing on opening. So the chat was ended and then they started freezing again. Why are my non apple apps working fine but apples own apps are so affected.