iOS 26.2 Update causing major issues on iPhone 16 Pro

Since I updated my iPhone 16 Pro to iOS 26.2 I have experienced major issues.

My bookmarks have been deleted apart from a few, my iPhone has had a black screen after charging and the clock & calendar icons have greyed out. At one point the phone was extremely slow and them became unusable.

I had to manually restore my bookmarks which took all afternoon on my iMac only to find that they did not sync to the phone and they all disappeared when I woke up the following morning.

How are these updates allowed to be released without thoroughly testing them for issues first?

My trust in the reliability of Apple products has taken a major hit.