Rear view camera adjustments

[Bones2003]

I have the Riverpark C1000 backup camera on my 2021 Vista 35U connected thru a video switch to my Pioneer AVH-210EX dash radio/display. Here are my complaints about that system:
1) I can't get the camera adjusted to my satisfaction. If I adjust it down to get a decent view of the hitch, I cannot see the back of my towed car. If I adjust for a decent view of the back of the toad (and some of the traffic behind the toad) then I can't see any of the towbar and only part of the hood of the toad. It's like the field of view on the camera is too small.
2) I also cannot get the brightness adjusted properly. Either it is too dim or it blooms and washes out. I've played with all the settings (brightness, contrast, color, hue, dimmer, etc) with unhappy results.
3) There are no guide lines for backing up.
4) I did not like losing the rear view when I used the turn signals but that was easy to disable by disconnecting a connector to the video switch.

Am I missing something on adjusting this thing?

I'm seriously thinking about just getting a whole new camera system. On my 2003 Sunova, I replaced the old black and white CRT based voyager camera system with a Garmin BC30 connected to my GPS. It was awesome! I could clearly see the hitch/towbar, the toad, and quite a bit to either side of the toad and behind it. Also, the Garmin had adjustable guide lines that were a great help when backing up into tight spaces. The picture was very bright and rock solid with good color. Unfortunately, all that stuff went with the RV when I sold it.