Gaps in multitrack?

So I’m working on an album and wanted to create transitions from one song to the next, however when i export out the tracks and listen to it on my phone the transitions are jacked up and don’t sound like how they should. Maybe its because of these gaps in between? any solutions on what to do?
Screenshot 2022-09-30 095742.png

This is guess but try adding a short fade-out and fade-in. A few milliseconds fade should fix any glitches at the beginning or end without sounding like a fade.

You probably cut in the middle of a wave instead of on a [u]zero crossing[/u].

A [u]DC offset[/u] can also cause a click when it suddenly kicks-in or kicks-out.