I need a qr code generator extension that can make functional fully working costumised QR codes like these ones for example
Have a look here:
https://puravidaapps.com/extensions.php
There are several QR code creator extensions available.
I can't seem to find one for making advanced qr codes...
Then perhaps you have your answer?
You may have to use an online service that can generate the type of qr code you are after?