What I do to get over this - as soon as I have an 8+ bar loop i like i paste it into Arrangement view so it fills up a 5 minute song, and then I start taking parts out. Gives me a basic “song” to start fleshing out.

I do something similar to this too- sometimes making 2-4 scenes and pasting some basic form in the arrangement.

From there, I see it the way a sculptor might see a slab of rock, and start “carving out” the song.

Funny enough I always found the opposite, I find Renoise great for making short loops but putting them together into a full track to be a pain, and then visa-versa with Ableton and software like it.

The OP-1 is where I've found this to be especially the case, incredibly easy to make a loop on but never managed to make a full song on it, aside from using mutes/effects on a single loop to stretch it out into a full track

I found the OP 1 especially difficult for this. I never got used to the tape recording workflow. It's a pity because I really liked it otherwise.