screwed up service t-mobile is nothing but lies and laziness

T-mobile signals are horrible in Carteret, NJ. Barely a single network bar appears on the phone. It's good enough to make a phone call but to browse any internet or to open T-Mobile app, shoprite app,  or any kind of app, it's a big failure. It's so frustrating when you have to look for public WiFi to connect with and knowing it's not safe but still have to just for the sake of it. This issue has been going on for such a long time. At home we have WiFi to rely on but outside the house, phone is good for nothing. There are times I see 2g or E on my network. 
I went to the T-Mobile stores too many times and surprisingly inside the Carteret T-Mobile store, I get full 4 bars and 5G. Ofcourse something is must if installed like a signal booster. It's a shame how T-mobile is not doing anything about it. I have made numerous calls to the customer service and they told me to get a new SIM card since I am using Built in sim for my iPhones which was in correct. I have android, iPhone 7plus, SE, iPhone 12 Pro Max and 13 pro max. All of the phones face the same issues. My family/friends faces the same bad service. It's nothing but excuses from these money making companies. Just SELL SELL SELL AND DONT LOOK BACK.