Lichess is broked and me grammer am too

I played 4 games so far today on lichess.
I play one vs a 1700 in 1/2|0 horde, flag him and get 535 rating.
I also play a single game in 1/2|0 crazyhouse, flag another 1700, and get 501 rating.
The moral of the story? Play 1700s to get 2000+ in one game.