I’m In A Slump HELP

I was Plat 2 50 LP and Now I demoted to Plat 3 80 LP. This may not seem like the greatest fall but I have been losing a lot more than I have been winning. I don’t think I’ve gotten worse, I have been playing like I usually have but still losing games. I’m beating myself up for a lot of these losses and it’s putting me in a bad mindset for the rest of the games I play. Some players suggest I take a day break. Have any of you guys been in a slump and how have you dealt with it?