I played two games. The first I played badly, lost and it said I was FIDE 2350. The second I pinned and won its queen early on, won the game, and it said FIDE 1

I played two games. The first I played badly, lost and it said I was FIDE 2350. The second I pinned and won its queen early on, won the game, and it said FIDE 1400. (I think I'm actually around 2000-2100ish)