Even the most advanced compression algorithms (like LZMA2 used by 7-Zip) have limits. The theoretical maximum compression for video game data is roughly 20-30% of the original size for uncompressed assets, but GTA V’s files are already heavily compressed in RPF archives. You cannot compress a 90 GB file into a 24 MB file.
The full version of GTA 5 requires roughly of storage space. It is technically impossible to compress a high-fidelity game of that scale down to 24MB—a size smaller than many high-resolution photos. Why you should avoid "Highly Compressed" 24MB files:
The search term also highlights a misunderstanding of file formats.