Could the red and green lights near the Moon and Venus be related?

The conjunction just means the Moon and Venus appeared close together from our viewpoint. If the colored lights were moving or blinking, an aircraft is one possibility, since aircraft use red and green navigation lights. Their movement over a few minutes would be a useful clue.

They might not have been separate lights in the sky at all. Bright objects can produce colored fringes or reflections in a phone camera, and low objects near the horizon can look more colorful because of the atmosphere. If the colors show up only in the photo, camera effects become more plausible.

Location, time, direction, and whether the lights changed position would narrow it down a lot. Venus and the Moon can be checked against a sky chart for that place and time. A steady point that stays in the same relative position is different evidence from lights that cross the sky or flash.