A trailer that sways with a umbilical cord that won't stay plugged in is a very dangerous combination. You could very easily lose the truck and trailer in a rollover accident.
RV'ing isn't cheap; you should have checked it out before you took the plunge and dumped the apartment
Now get a brake controller that works like it is supposed to, a weight distribution hitch, sway control, and new whatever so your umbilical cord stays plugged in.
You need to spend some of that rent money you saved and do things right before you end up with a catastrophe on your hands.
If it was anywhere around April 1, I would swear this whole post was some kind of stupid joke.