I thought it could've been space too, so I deleted some stuff I didn't need, but before the most recent update, I had downloaded the game and everything was perfectly fine, no issues (and I had less available space at that time) so i don't know what it is.
I ended up downloading an apk package installer and that seemed to do the trick! it installed, so i think it may have just been an issue with the package installer that android has
its an app that you can download that specifically installs apk files (like the game file for android on this game) I personally downloaded Uptodown to install the game file but there's many other apk package installers!