What does it mean if you are born under a wandering star ?

wandering star is a bad direct translation from 2 old greek words that meant - Planets moving around a star.

No idea what people mean by being born under it

It means someone who is on a journey to find their place in the world, a desire for freedom, and the universal human experience of searching for meaning and purpose in life. It's not about wandering aimlessly, but following your destiny.

It means you never settle anywhere for long.
If memory serves from the song

Never saw a sight that didn't look better looking back
Lee Marvin - Paint your wagon

You better learn how to walk quickly so you can catch that star before it disappears, I guess.

Means there is a great Lee Marvin song about it

Wandering peepee syndrome 😅 monogamously challenged

you gotta share a chick with your mining partner and dig tunnels?..

You get to sing in a gruff voice.