The most important information to find out what you have seen in the sky is the direction of the compass and the time of observation. The twinkle of the stars is caused by the turbulent Earth's atmosphere, which light must pass through to reach the human eye.

To distinguish a star from a planet, it also helps to observe the celestial body for several nights. You can track the trajectories of different satellites with apps like "Stellarium" or "Heavens Above" The UFO Reporting Office of the Central Research Network of Extraordinary Celestial Phenomena provides information about these phenomena.