IPhone 16 Pro Max transfer issues

I went from my iphone 12 Pro Max to my brand new Iphone 16 Pro Max I finally got my phone working (after 2 days) for cell and texting but, except for the regular apple apps, NONE of my other apps will download. They are showing saying loading but, they do not download. This has been like this for 4 days now. I have removed apps and reinstalled them and they still show as pending download. What is happening?