As for bluetooth adapters, here's one that is embedded in the head of the charge cable itself.
https://www.amazon.com/PALOVUE-Bluetooth-Streaming-Hands-Free-LinkFlow/dp/B08F74CFM7
I have had The one below. It has Apt-X for Android, if you have an iPhone it will use AAC but it works also. Haven't had a problem with it and have had it for 2 years. It connects when I turn the car on.
https://www.amazon.com/gp/product/B08F74CFM7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1