How can I stop Apple Music from autoplaying in my car?

I have an iPhone 14 that is up-to-date. Apple Music has been auto playing in my car (Prius 2015) the same stupid song for years. I could not find a solution for it until I finally had to delete the Apple Music app off my phone which did fix the problem, but is there any other insight as to why the problem occurs?

[Re-Titled by Moderator]