Getting objectively worse as I study more

First of all I mainly play Blitz so I want to keep the conversation within that context.
I understand that anyone can get tilt, and I know that tilting doesn’t go away overnight. But for me it seems the last couple of months I have been playing objectively worse than I was before that. Like if I play myself from earlier this year or even 2 years ago I’m confident that I’d lose most of the time. And all this started when started playing more puzzles and devoted more time to studying.
I do see myself blundering away pieces less so that’s good, but on the other hand I find myself losing on time or at least being time-pressured in to a loss more often. I also find myself in a situation where I am presented with some candidate moves but all of them seem bad and I end up losing my way. It’s not that I am playing more difficult opponents because my rating is actually down from 900 to the mid 700’s now.
Anybody been in a similar situation? Did you ever get out?

@1

"First of all I mainly play Blitz" ++ That is the problem.
"all this started when started playing more puzzles"
++ Use less time / puzzle than time / move in a game.
"and devoted more time to studying"
++ Study helps rapid and rapid helps blitz, but study does not help blitz.
"I do see myself blundering away pieces less" ++ Good.
"losing on time or at least being time-pressured in to a loss more often" ++ Play faster.
"some candidate moves but all of them seem bad" ++ Then your position is bad.
"my rating is actually down from 900 to the mid 700’s now" ++ Blunder checking.

Play rapid. Blitz isn't good for improvement. Once you get to like 1400 rapid then you can think about improving by playing blitz (that's what I did)

I dont see how blitz can be mentioned in same text as anything about candidate moves. Nobody who plays any form of speed chess gives themself the chance to calculate properly. Elo ratings can be used to measure anything even football teams. So those who are proud of however well they do with speed chess are jus lying to themselves. Blitz players want a short cut to getting good without studying. There are no short cuts.

Insted of being harsh here is a suggestion I got from my teacher. Ok i dont like Daily chess its boring. So why not use Daily as my way of bullet or as a simul? I get 10 or 12 Daily games going. Nothing says you hafta spend 3 days or 7 days. I can know i am blowing thru and spending 10 seconds. So I measure my fast instinctive moves thru Daily. Or if u want you can always spend a little longer. Its not as addicting as Blitz. But if ur opponent has no time to think then you arent acvomplishing anything.

You think you study but you dont

What are your goals as a chess player? Is there any reason that you want to focus purely on blitz games?

Playing chess after too much studying is like running after a meal. There needs to be time for digestion.

The biggest reason people struggle in lower-level chess is because of blunders. They make them in almost every game.

A mistake can instantly put you in a bad position, no matter how well you played earlier: if you had great opening knowledge, great positional skills, great endgame skills, whatever; a single mistake can change everything (you lose a piece or get checkmated).

So, how do you avoid blunders? Follow this simple algorithm:

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While avoiding blunders is crucial, I also share a few basic principles with my students. These principles help them figure out what to do in each part of the game - the opening, the middlegame, and the endgame. Understanding these simple principles is like having a map for your moves. I provide my students with more advanced algorithms that incorporate these fundamental principles. When you use this knowledge along with being careful about blunders, you're not just getting better at defending. You're also learning a well-rounded approach to chess. Keep in mind, chess is not just about not making mistakes; it's about making smart and planned moves to outsmart your opponent.

if studying more makes you bad,

doesn't studying less makes you good.

So, you are a strong player. Good players that are above 1600 in ratings can play blitz without blundering, so blitz is good tactical training. However, the person is lower than 1000, which means blitz to him is just a blunderfest.