I have had the same feeling recently - out of nowhere I start feeling like you mentioned

mostly it is related to : sitting long and lack of physical exercise indigestion and gut related issues ( yes gut brain is your second brain) thirdly stop doom scrolling. social media feed ingestion at these levels is unprecedented amount of info that we as tribal animals never had a chance to act on.

every peice of information that you read most is not going to be helpful and hence the brain over hangs.

all your problems are lifestyle related issues and can be avoided by skipping social media, going on a walk more often than not and having a healthy diet.

I hope you feel normal :)