tmobile home internet keeps disconnecting

Still losing internet randomly and having to reboot the gateway several times in several hours.  Get the same response from T-Mobile….working on updates to the system serving me and give it a week or two.  This has gone on far too long but the problem is there are no other providers apparently without going using a satellite dish for Internet. 

I have read too many reviews concerning satellite internet that I don't want to get involved in an even more expensive service with just as many issues.  I have tried everything T-Mobile has suggested including setting the gateway to 2.4 Ghz to keep it from trying to switch from 4G LTE to 5G and that doesn't solve the issue either.  Support can't seem to understand that the issue is not my Gateway location as the signal is the same db all around the outside of my home.  It worked great for about 6 months but is terrible now due to the number of times a day I have to reboot the gateway and also am disconnected in the middle of doing something and lose all the information I had input and having to start over hoping it will stay connected long enough to finish.  I have an ATT landline phone that is on a Cell Phone box and I am noticing that the signal on it is dropping form 3 bars to 2 bars off and on also, so suspect that all of the issues are due to the changes with the 5 G rollout by all the Tech companies and they don't have a solution for the issues yet.

Would appreciate any information from anyone that may have a solution even if it means changing provider.