iPhone storage issue
iPhone14 pro - I have deleted data pictureqs and videos in WhatsApp , it still shows storage used and unable to update the new versions
also I am unable to offload WhatsApp
iPhone 14 Pro Max
Keep in mind WhatsApp is not an Apple product. But your inability to remove the app leads me to think you may need to go Settings > Screen Time > Content & Privacy Restrictions > iTunes & App Store Purchases - make sure Deleting Apps is marked allow.
Otherwise, for issues with WhatsApp, you'll need to reach out to them for help.