Small light in night sky moving in an unnatural way and unlike any known aircraft.

I was looking at the night sky on August 11th 2022, unsure of the exact time but around 10:15 or 10:30 pm, and I saw a flash of white light in my peripheral vision to the East. The light was no different than something like an airplane or a bright star, but it came out of nowhere. I looked over at it just as it faded to a tiny red light. It looked like a satellite moving slowly and steadily across the sky in a northerly direction. It was just speck of light that looked like a small star, but moving. There was no sound. I kept watching to see if it would flash again (it didn’t). Then it did a U-turn. It made a narrow looping arc until it was going in the exact opposite direction. Then it moved unnaturally fast! It was basically a streak, and then it completely disappeared--not going out of view, but disappearing before my eyes. I've never seen anything in the sky move that way before.