In the video you mentioned that you warmed up in the truck and were feeling much better. That to me indicates that you were not adequately outfitted for the conditions. I have killed whitetails spot and stalk, but the vast vast majorityof my success has been sitting silently and watching for hours at a time. There is only so much daylight that time of year and you have to spend it wisely to be successful! Most of us are guilty of leaving the woods after the morning hunt...that is the time where you need to be in the woods because the competition has all left! I have learned this lesson the hard way many times when hunting partners killed deer or elk while I was in camp getting something to eat or taking a nap... Is it time to invest in some better gear that will keep you warm long enough so that you are comfortable enough to stay out there? I wear sitka gear, but there are others as well. I carry my fanatic bibs to the location I wil be sitting then put them on. There are like a camo sleeping bag and I am as comfortable as I would be at home watching TV while I'm wearing them! I'm not saying you need this to be successful, but it is something to consider based on an honest appraisal of how long you can sit in one spot.
I see you are running trail cameras and that is really smart and helps give you confidence that the deer do exist! Keep using that tool to find areas that have high numbers of deer. The more does you can find the more bucks will inevitably be looking to breed those does. Scouting is the key to being successful at all types of hunting. Most of us only get a few weekends to hunt a year, make them count by looking for deer whenever you can from now until next season.
Another thing is, especially when you are new, your focus should be on trying to create and replicate success, not filming your experience. That is, if your goal is to be successful. If your goal is to go out and document the outdoors and you don't care if you kill anything then more power to you! I say this meaning absolutely no offense! Its just that you are making critical errors by focusing on the camera when you should be focusing on finding deer. You need your entire focus to be on the hunt. You have to hear a deer breaking a twig, see a deer twitch its ear, and not make any noise narrating your plans to the go pro alerting all the deer near the trail area that you found.
I am no expert on any of this, but I have been able to kill some deer after a PILE of failures. I hope this helps and the other solid advice people have posted on here helps!