iTune cannot sync songs to my iphone

Hi,

i tried syncing a playlist on my iTune from iMac to my iphone. All songs from the playlist sync except for 2 of them (see the greyed out song at the end of the attached screenshot). I have research online for possible solutions which include, "checking the tick" for the song selection, making sure icloud music library is turned on, deleting the songs and then download them again, authorise the iMac under iTune and also sign in/out of iTune. Nothing works. Can someone advise me on this?