I can't add my phone number \\ Try another verification method error

I found a method that worked for me. (I had the same problem and was looking for answers around the Microsoft community.)
This was the entire reply from a separate thread:
"Hello Aronas,

Good to see you in Microsoft Community.

I suggest you try adding the phone number again by following the steps below:

1. Sign in to Manage how you sign in to Microsoft. If you’re having issues signing in to your Microsoft account, see Microsoft account help for more info.
2. Select Add emailor Add phone number.
3. Follow the instructions to add a new email address or phone number to your Microsoft account aliases.

I recommend that you visit the above link in your phone's browser (using cellular, not WiFi) to add a phone number, which theoretically excludes other distractions and allows the same ISP (Internet Service Provider) to minimize latency.

If anything is unclear, please do not hesitate to let me know.

Best Regards,

Mosken_L - MSFT | Microsoft Community Support Specialist"

TL;DR
Open the link in your browser with your phone while using your cellular data and then try adding your phone number.

i have the same problem pls help me

I cannot add my phone number

How I can use another verification method when there isn’t any other verification method.

I managed to get on there.