USB C to Lightning Audio Adapter Cable USB Type C Male to Lightning HiFi Audio Female Headphones Converter Fit with iPhone 16 15, iPad Pro/Air, Macbook, Galaxy S23 S22, Pixel 7 6 (Not for Charge&Data)

OP’s headphones aren’t 3.5mm, they’re lightning. OP, it may be more economical to get new headphones. But there are adapters available, like this one on Amazon. https://www.amazon.com/USB-Lightning-Headphones-Converter-Compatible/dp/B09X9JXG2J