Please try holding down the Arabic numbers. Both the options will appear. If you do like this then please look for any third part app that may have been developed to suit your requirement
Add or delete a third-party keyboard app
You can install third-party keyboard apps just like you install other apps on your device. After you install a new keyboard, you need to add it before you can use it. Follow these steps:
- Go to the App Store and find the keyboard app that you want.
- Tap Get > Install.
- Enter your Apple ID password or use Face ID or Touch ID if it's available on your device.
- Then add the new keyboard. Go to Settings > General > Keyboard > Keyboards > Add a New Keyboard and select the app that you installed. You might need to set the keyboard to allow full access in order to use it.
To delete a third-party keyboard:
- Go to Settings > General > Keyboard and tap Keyboards.
- Tap Edit.
- Tap , then tap Done.
You can also delete a keyboard by deleting the companion app that you installed from the App Store. This also removes the keyboard from Settings.
About the keyboards settings on your iPhone, iPad, and iPod touch ...
https://support.apple.com/en-us/HT202178