i keep making dumb moves
"... Sure, fast games are fine for practicing openings (not the most important part of the game for most players) and possibly developing decent board vision and tactical 'shots', but the kind of thinking it takes to plan, evaluate, play long endgames, and find deep combinations is just not possible in quick chess. … for serious improvement ... consistently play many slow games to practice good thinking habits. ..." - NM Dan Heisman (2002)
https://web.archive.org/web/20140627052239/http://www.chesscafe.com/text/heisman16.pdf

Maybe you play too much chess and your brain wants a break. Maybe you were playing when tired. I don't take blitz too seriously because that rating can go up just as fast as it went down. Rapid is what I consider my real chess rating. I take those games more seriously
I play blits and ive lost around 150 rating points in the last few days. I keep on hanging pieces and letting them forking my pieces. help idk how I can fix it