It's hockey, there are a lot of games. There will be a decent amount of games where you play well and lose due to some bad bounces or a hot goalie, and other games where you deserve to lose but win due to some lucky bounces or hot goaltending of your own.
I think the majority of posters have watched hockey long enough to realize games like tonight are not unusual, and the biggest thing is to play consistently well as it will lead to more wins than losses in the long run over the season.
I'm on record expecting 87-90 points this year