Slow upload speed and T Mobile home Internet

i get 244.08 mb download, and 6.95 mb upload. Ping is 176 ms.  My gateway is on a single floor home near west end window. i get 3 bars, sometimes 4 bars. I live less than a mile away from a T-Mobile tower.  One way to get better speeds is to have your gateway connected to a WiFi router and have your devices connected to the wifi router rather than the gateway.. that will reduce SIGNIFICANTLY the heating issue the gateway has. I have a Netgear WiFi 6 Mesh system and get perfect reception throughout my 1700 sq ft home. No devices should connect directly via wifi to the TMobile Gateway.