my iPhone 11 not getting updated I requested so many time why??

Follow these instructions...

Update your iPhone, iPad, or iPod touch - Apple Support

If you are having trouble with update, check this link...

Updating iOS: common issues and solutions - Apple Community

It’s hard to tell from your tiny screen shot, but I think I see at least 3 problems:

• The phone is in low power mode
• You are connected to a personal hotspot, not a free-standing Wi-Fi router
• Your battery is below 50%