please help me with my mental

i main bowser jr if that will help. so first of all i know gsp realy isnt that important but its not just that i just want to win again and have fun. I dropped from about 15.3 down and im currently struggeling to get back into elite as soon as i somehow get to lock in i easily 3 stock the opponents but most of the time im just frustrated and even if im winning it doesnt feel good just like ive did a task. so if anyone is able to help thank you very much <3 btw all of this started as soon as i played some other chars (byleth and pythra) i got both of them at about 12 mil gsp maybe im adapting to lower level players and because of that my bowjo also struggels