Hey mystrangeworld,
Thanks for using Apple Support Communities! I understand you're experiencing an issue updating apps on your iPhone 11. I definitely want to make sure you're able to get your apps fully updated, and I'm happy to help.
I recommend checking out the link below and working through the steps there to resolve update/download issues with apps.
If you can't download or update apps on your iPhone or other Apple device
If the steps there do not help, let us know what happens when you try to update apps. Please include any errors you're seeing. We'll go from there
Thanks again, and have a great day!