I was walking a dog and saw a bright light in the sky I thought was a star but it was changing colors, moving and seemed to respond

I was walking a friend of mines dog, which is not uncommon for me to do. It wasn’t too late at night, for me at least, for Sun City maybe. It’s a 55+ retirement community. As I was walking, though, I noticed that things just seemed weird that night. It was eerily, eerily quiet. I mean, there was no one outside. I didn’t see any cars, there were no planes. Typically there are at least jets occasionally going to Luke Air Force Base. Nothing, it was just so still and quiet; other than a little bit of a breeze. Even my friends dog was acting strangely. I usually take both of my friends dogs, but the one dog refused to go. He didn’t want to go, I’ve never had that happen. They always both love to go. As we were walking, I noticed the dog wasn’t pulling on the leash and wanting to go ahead like he usually would. He stayed right next to me the whole time, to where I was almost tripping over him as I’m walking. I always like to look at the stars and use my app to try and identify different stars and things and as I look up, I saw this bright, bright light moving across the sky. As I stopped to look at it, I got my phone out because I knew this was no satellite or Star. I figured it was a planet or something much brighter. I was going to try and identify it with the night sky app. I couldn’t find anything on my phones Star chart that would explain this light and as i’m looking at it, then back at my phone, it stops moving. I got a strange feeling and felt like it had stopped and was looking at me. It was like it knew I saw it and it saw me. And after it stopped, I started recording on my phone because I’m like thinking no one‘s gonna believe me. This is crazy. It’s hard to capture in the video, but at the time seeing it live was so different. It was changing colors rapidly and it almost looked like it was pulsating or had maybe an electric charge. It looked like what id imagine a giant electron or particle or some thing would look. It seemed very energetic and changing colors and spinning. Then there were other smaller lights that were kind of passing in the background and I’m not sure if they were satellites or what they were but they were smaller than this light and appeared to move with it or toward it. Then it appeared to start moving again, and at one point in the video, it kind of stops and instead of changing colors rapidly it stops and it becomes very very bright and then dims down a little bit and then starts changing colors again. It was very strange. Then it accelerated and took off and started moving more quickly; more like how it was moving in the beginning when I first saw it. I took a short video at first because almost as soon as I started recording I had to stop because I thought something was wrong with my phone, the video was coming out strange, in that the sky seemed to be moving separate from the background house in video. So I stopped and started another longer video but I noticed the same weird effects in the video. I don’t know how else to describe it but that it seemed that the sky was moving separate from the ground where I was recording. Overall, it was a very strange night and I just remember the quite. No bugs, no cars, nothing. The quite was so noticeable because it’s usually constant background noise in the city where I live. Always background cars, planes, bugs, coyotes, owls etc. not this night though.