This is Venus.
The “disc” of light in the second part of the video (see attached screenshots) clearly is an out of focus image of a stellar point source. No doubt about that, you can see the typical ring pattern that results of that.
Direction is given as SE-NW, i.e. WEST. And it concerned a bright light, “brighter than any star”
Venus (the planet) is a very bright sight in the western evening sky at the moment. Indeed, it is brighter than any star. The description of “sometimes bluish gasses coming out of it, and the next moment perfectly round but with patterns” also points to an unsharp image of Venus, the “blue” being due to atmospheric refraction as it is low in the sky.
I.e., there is no doubt in my mind that this is a typical Venus sighting again, sightings that are responsible for many UFO reports.
Click thumbnail to see full-size image