Getting certain songs to play consecutively in a shuffled playlist

This sounds very complicated and is probably impossible, but I thought I'd ask anyway.

There are certain songs, mostly from soundtracks, where if I own the MP3 files, I join them together in Audacity into one because the tracks are similar (such as game soundtracks where one is a regular theme and the other is a more active "battle" version of the theme). But I want to listen to them on Spotify as well (to count towards my Wrapped), but the problem is, if I use shuffle, then I can't listen to those specific tracks in that order while the rest of the playlist is randomised. The issue with it changing to Smart shuffle when I don't want it to and being buggy with changing between shuffle modes (I have to exit the playlist, play a new playlist, then restart the first one if I want to re-shuffle everything) means I can't just turn off shuffle and have it play the next track, and some of these tracks aren't right next to each other on the albums they're on anyway.

So I wanted to know what I could do about it, because at the moment it seems like my only option is to make a playlist with a custom order and take the surprise out of it, or to just not listen to those songs on Spotify. Is there a way I could put two or more songs that I want to listen to in a certain order on a playlist, and somehow make it a playlist within a playlist, but unlike the rest of the playlist, that one doesn't shuffle? Or is that too complex?