Phone won’t charge even tho I used different chargers

I wanted to charge my iPhone 15 but the charger didn’t work so I turned it and flipped it and all that and it didn’t work my sister tried the same changer and it worked and I tried different chargers and it didn’t work with me but it did with my sister so I thought the issue was with my phone I checked and it’s clean no lint or dust or anything then suddenly not even a few mins later my sisters phone stopped working then she also tried different changers and it didn’t work what should we do please help we are losing our minds