Itunes syncing issue with iPhone and Mac
I have an iPhone XR up to date and a MacBook Air up to date as well however iTunes music purchased on one or the other causes syncing issues, where a song may be on my laptop but not on my phone. I've checked my purchase list through iTunes on both and made sure to just place every purchase song in my library so that wouldn't be the reason for songs not syncing. However now playlist made on the Mac doesn't show up correctly on the iPhone and album artist artwork is mixed up so I know there's an issue. Just haven't found the solution, outside of reset because I have a feeling I will lose all music again and be charged on iTunes for songs again. The syncing issue stems from iTunes not registering purchased songs because I already have multiples/duplicates of 1 purchased song so any suggestions, I'll gladly try.
Thank You,
iPhone XR, iOS 14