5G home internet keeps dropping

Well, I spent about 30 minutes on the phone last night with a very nice and seemingly honest tech person who basically told me that based on my location, the salesperson had no business selling me the 5G home internet service. I was getting two bars max, and speeds were all over the place--from around 40 Mbps all the way up to around 300 Mbps, but rarely. Very erratic. Then the whole connection would be lost after about an hour, and I'd have to unplug the device and plug it back in. Super frustrating. As it turns out, in my case the signal is just too weak, even though the tower is only about .7 miles away to the northwest and I am up on a hill. Pushing back a bit, I discovered from the tech person that upgrades are scheduled to come to the tower in my area in May/June. I'm guessing the salesperson figured I'd spend a few months trying to figure out the problem until the tower is upgraded; then everything would be okay. Anyway, I asked if I could get the 4G LTE device in the meantime, and she said they are no longer offering that. So, I asked if there was a way to adjust the settings of the device only to grab the 4G signal, and she said I could go to 192.168.12.1 and use the admin login credentials on the device tag and set it to 2.4 GHz and not 5 GHz. She did not seem sanguine that this would solve my problem, and I couldn't even login to the device anyway, so I just gave up. They are temporarily suspending my account while I hang on to the device. The tech person said she would personally call me back when the tower is upgraded, and we can try again. We'll see. I'd be gone and would never come back to T Mobile if it wasn't for this nice, honest tech person. I wish I could remember her name. She needs a promotion.