Home Wifi NAT Type issues

What makes me even angrier is that 2 abject weasels representatives and agents for TMOBILE straight up lied to me when I queried them about this. One told me, I just wouldnt be able to “ethernet” my way into NAT resolution, implying that I could do so (SETUP OPEN NAT) over the air just not with a hard wired ethernet cord. I thought well who the hell wants to do that anyways, but as we all are finding out, there's absolutely NOTHING that can be done with this topology lest one wants to pay for unscrupulous VPN providers and near as I can see, there's zero guarantee with that either. THIS MAY SEVER A DECADE LONG RELATIONSHIP WITH OUR CELL SERVICE TOO, TMOBILE. What exactly is Verizon offering, anything?