T-Mobile Nationwide Service Going Downhill

I took T-Mobile in 2019 when they put towers on the Offshore Oil Platforms where I work.  Things seemed to be going great.  Then in 2019 they modernized the tower on Dixie Drive in Clute, Texas 77531 and my service went from 4 bars all time inside and outside and they modernized it and the service went to 1 or 2 bars sometimes an none others, dropped calls and missed calls. I have been reporting it for almost four years, the customer service in Philippines is USELESS.  Now I am in Lafayette, La for work and up until now I had 4 bars inside and outside the hotel, and fast Hotspot Internet connection.  Now in Lafayette, La the signal is 1 or 2 bars, it takes 5 minutes to open a satellite weather page and it never completely opens.  What is up with T-Mobile, are they going out of business?  A once very satisfied customer, now a very disgusted customer and do not believe anything the Yo Yo s in Philippines tells me.