What if my iPhone doesn’t want to update?

Hello~ Take a look here by clicking on below.

If your iPhone or iPad won't update - Apple Support

Note once inside link you may click on others highlighted tabs of interest. Are you running a VPN or beta?

~Katana-San~

Is it possible for you to post a screenshot of the results when you try to update?

The screenshot can provide important clues to help solve the problem without us having to ask multiple questions or asking you to work through a dozen or more steps in a support document.