I want to update my iPhone

Assuming your iPhone is compatible (iPhone 8 or newer), see here - Update your iPhone or iPad - Apple Support

If you encounter any issues, try the steps here - If your iPhone, iPad, or iPod touch won't update - Apple Support

Otherwise, please post back with relevant information.

This is not a chat service. Posting selfie pictures has no value here. See if this helps: Update your iPhone or iPad - Apple Support