I used one from CableCreation. https://www.amazon.com/gp/aw/d/B07Y87QXTQ

I use two different dongles, depending if I'm at my desk or in the car.

https://www.amazon.com/gp/aw/d/B07Y87QXTQ?psc=1&ref=ppx_pop_mob_b_asin_title

And

https://www.amazon.com/gp/aw/d/B08B37F298?psc=1&ref=ppx_pop_mob_b_asin_title

This is what I bought and think they're perfect, but a bit pricey.

USB C to 3.5mm Headphone Audio Ad... https://www.amazon.com/dp/B07Y87QXTQ?ref=ppx_pop_mob_ap_share

I've been using this one for almost a year, it works well and has the ability to charge the phone and use headphones simultaneously