From what I can find, GTA SA is about ~2.6GB on mobile, less than half of LIL's current size, and about ~1GB before the apk was too large (around version 0.14.0, at ~3.8GB).
From what I remember, Selebus has already tried to compress the images by converting them to .webp, but with over 17,000 images in the game, the compression isn't enough to overcome the limit.
Try JoiPlay, it is an android renpy emulator able to run the Windows Version on Android. Notable difference to just a direct Renpy Android version is that Joiplay actually can load large Renpy games, something the android version can't.
Definitely works with LiL windows version, so give it a go.
