How is it possible that Texting via all forms of data isnt working?

Text messages are not working for me (I am receiving sporadically but they are not sending according to multiple Messaging Apps) I'm not a network pro, but if I have WiFi working, Mobile Data working (I can post this question, for instance using my fold), how the heck are texts not finding a way to send?  Tried SMS, WiFi calling on/off, RCS on/off, mobile data on/off, and all permutations.  Even restarted the device.  Duration thus far: 2 hours.

Is there an authentication glitch on the TMobile Network?

I live in the middle of a big city, I thought 5G meant that there was some tiny amount of robustness and redundancy.

Is there some other dependency I do not know about that would mean out going texts fail despite full internet access?

The fact this can happen with internet working seems unacceptable especially given the premium prices. 

VM is also unavailable to access.  

There's shockingly little live outtage communication on this website or via support, which is unhelpful.  Though it is easy to see the problem affects many others.

If I were an enterprise customer something like this would seriously damage my faith in the network stability and redundancy best practices. 

If there is some other dependency that often lack a backup (such as authentication) then there should have been a communication on the front page of the site detailing the issue and expected time to fix. 

These should be considered some of the most basic, barely adequate, business practices, in my opinion, and doubly so for a utility company.