I've been using my Samsung charger that came with the phone when I bought it in 2021, recently its says cable charging instead of fast charging.... should I be worried? Is there anything I could do? Please help

Hi Samsung Family. I'm using Samsung Galaxy A21s, recently when I plug my Samsung earphones, my phone doesn't read them when I play music but when I twist them a little bit they work properly. So I'm worried. Any solution to my problem?