Is there something wrong with me?
practice some tactics after taking a break, try some games against bots. Just some ideas that might be of help.
Try playing more rapid games and less of blitz maybe once you achieve your desired rating in rapid then go to blitz
Fischer got brilliant by taking long breaks from tournament play.
but it’s not like he spent that time going to the cinema every day.
Get an actual chess book with games from the greats of yesteryear. Set up a board and set and go over a game or two in slow motion. No computer needed. If there's something you don't understand that is not covered in a note, try to figure out why it did or didn't get played. This is how people learned and improved for a couple centuries.