Hello Eucampia57,
Thanks for that info and for choosing the Apple Support Communities. If we understand correctly, you are unable to get Ask to Buy requests on your iPhone, but you do see them on your Mac. To begin with, let's check settings:
"On your iPhone, iPad, or iPod touch
1. Open the Settings app.
2. Tap your name.
3. Tap Family Sharing.
4. Tap your family member's name, then tap Ask to Buy. In iOS 15 or earlier, tap Ask to Buy then tap your family member's name.
5. 
6. Turn on or off Require Purchase Approval. "
We also want to have you check the Messages app and see if this Ask to Buy request shows there:
"Where to find your Ask to Buy requests
If you miss an Ask to Buy notification, you can find the request in Messages on your iPhone, iPad, iPod touch, Apple Watch, or Mac. If you don't see the request in Messages, you can find your Ask to Buy request in Notification Center. "
And that info is from here: Approve what kids buy with Ask to Buy - Apple Support
We understand you already checked out the following resource before posting here. If you are still having an issue with Ask to Buy requests on your iPhone after following those steps, you may want to double-check it to make sure you've covered the guidance there as well: If Ask to Buy isn't working - Apple Support
Cheers!