Your pics didn't come thru for me but I'll take a stab without seeing them.
1. Depends on the audio output & input on your Phillips TV and Genesis. If you have HDMI jacks on both then that's the way to go, audio and video all with 1 cord. Otherwise you could use the RCA jacks, yellow for video, red(right) & white(left) for the audio. You won't get true surround with the RCA cords.
2. I'm assuming you have a batwing antenna. To get TV channels make sure the antenna is up(obvious) and booster is on. In the TV menu there should be a 'channel scan or search' feature. Run it and the TV should pick up watchable (closest) channels. You will probably have to rotate the antenna to get a stronger signal. Start by seeing which direction other campers have their antenna pointed. A wingman antenna attatchment will improve digital reception.
2020 Flagstaff Micro Lite 22FBS