Unable to use T-Mobile Home Internet with work VPN, any suggestions?

I was so happy to be able to ditch Xfinity but now I am recognizing I made a horrible mistake switching to TMobile. If only the sales rep would've saved me some time to let me know I wouldn't be able to work from home using T-Mobile because I require a VPN. That would've been honest business. Instead I have wasted hours this week. 

Thankfully, my chat with T-Mobile tech support this morning resulted in them telling me that if my VPN is an IP6TMobile is only IP4 therefore "TMobile may not be a good fit for me."

The rep also said she would flag my account with the note that there was nothing wrong with their devices that it was all on my end. Noice.

I tried this afternoon to shut off my VPN and it took a while, but my Teams' meetings video and audio significantly improved. But there's no way I can work without using my VPN because I won't have access to any of my work files. I can't try the other fixes here because I do not have the ability to use a command line on my work laptop for security purposes. 
 

So I just want to thank all the contributors to this thread who have validated that TMobile does not want work from home customers. I will be telling all of my colleagues the truth, since they were like me very intrigued about switching to TMobile and getting the heck away from Xfinity but now it looks like we're stuck and I have to go crawling back to Xfinity or hope and pray something improves on my Internet connection in the next 48 hours.