iTunes/Apple Music plays different song than selected

75% of the time when I double-click, highlight and press 'enter', or any other normal way that I would select a song and play it from the iTunes app, it will not play the song I've selected and will play a completely random one (regardless if the song is checked or unchecked, if the playlist is off or on shuffle, or if I am playing from a playlist or the general 'songs' list).

Much more often than not, it will play a random song I did not select. Sometimes I will have to press 'enter' or double-click the song up to 5 times before the actual song I want will play.

I am using a new iMac but have not updated to Big Sur yet. I don't know if this update addresses this problem.

I have seen this question posted a few times but I am experiencing this problem from a desktop computer rather than a phone and there hasn't been a proper answer to help. I do not experience this problem at all on my iPhone and am logged into my Apple ID on both. I have signed out and in again on my computer and it does not fix the problem. Thank you for your help!