In your video, your short term trim is switching and that is good. At about the 4:15 mark of your video you can see long term fuel trim is not switching. As low as those numbers appear to be, I would say running way rich and need to find out why. Even in the first video link I sent you, his long term readings were stuck at 12.5 and while that is higher and closer to 14.6 to 1 ratio, called stoichiometric, it is not switching and shows what appears to be a likely vacuum leak but is a small one.
I think I read your steady long term fuel trim at 1.6 and not switching and to me, that indicates a large vacuum leak or something else causing that reading. When I was running shops we wanted to see O2 sensor activity and switching within proper parameters. Been a long time since I dug this deep in a diagnostic problem like this. Others here will have newer fresher info hopefully for you.
I think I read your steady long term fuel trim at 1.6 and not switching and to me, that indicates a large vacuum leak or something else causing that reading. When I was running shops we wanted to see O2 sensor activity and switching within proper parameters. Been a long time since I dug this deep in a diagnostic problem like this. Others here will have newer fresher info hopefully for you.
