Meaning
Two arrows chasing each other around a rectangular loop, the repeat button on media players. It means play again from the start and keep going, over and over.
People use it for songs they cannot stop playing, daily routines and things that keep happening: “Same song on 🔁 since yesterday, help” It also works for rewatching a series or reordering a favourite dish. For one single track looped, 🔂 with the small 1 is the exact match.