How to access missing tracks in iCloud storage with error?

I replaced my iphone and my macbook. Now my PERSONAL recordings (non-commercial) have a cloud with x on my phone and a dotted cloud on my macbook. I am unable to play any of them. Have tried the advised methods to retrieve with no success. Very upset as these are rehearsal tracks that were recorded years ago.

Both devices were backed up to cloud prior to replacement yet these don't seem to be "in the cloud". My commercial/purchased recordings all transferred just fine. HELP!

[Re-Titled by Moderator]

Original Title: dotted cloud or cloud with x