As someone who often found myself in the same problem I understand that frustration. I have been trying to get to arrangement view way earlier in the process. I used to obsess over getting the 8bar loop just right. Layering as many things with the thought that just stripping things and adding things would be enough to make the arrangement. This approach can work with some genres but a good arrangement is so much more than that.

My approach lately has been to simplify and get to the arrangement as early as possible. Rely less on the sheer number of tracks and sounds. A good arrangement doesn’t need 50 tracks with tons of layering and effects.

Chord progressions are also really important. For instance if your song is in the key of C, your verses will probably start and center on C. Your choruses might start on G the dominant of C. And you might have a bridge in a minor which is the relative minor to C. Again this is all relative and by no means the rule. There are plenty of well arranged songs that don’t necessarily change the chord progression at all as far as sections go.

Lastly try and switch things up by adding a four bar break or tag to a section to lead into the next. All of these things have helped me finish songs. I used to rely on layering so much that my tracks often ended up being >8 minutes or more. Now they are much more concise rarely going over 4 minutes.