I lost double what you did, 290 rating points, by playing far too many games. Some people can cope with lots of games, I found out the hard way that I can't. You start losing belief in your own ability when your rating plummets and it becomes a vicious circle. My rating is climbing again by playing much less often.
Of course you could simply be playing far too quickly after playing so much Blitz.
Don't lose heart though. Your rating will start going up again! 👍
Any help would be greatly appreciated 🙏