Lichess Algorithm

You: Just lost to a lower-rated player with the black pieces.

Lichess Algorithm: Okay, now you get to play the black pieces again.

It's called a 'Color Break'. It usually happens when you have already got the White pieces many (2+) times in previous games.

You have had 311 games as White and 314 as Black from the pool, meaning 50.34% Black. Lichess will attempt to keep all players around a 50/50 ratio. You may have simply been matched with a player who needed a White game more than you did.