Even the minimalist FIFA 19 Legacy Edition on older consoles (like PS2) required several hundred MB. No compression algorithm—whether LZMA, PAQ, or modern machine learning-based methods—can reduce 30 GB to 15 MB without destroying the game.
The actual install size for FIFA 19 on PC is approximately 32GB to 44GB . Compressing 40,000MB of data into 15MB is technically impossible while keeping the game functional [1]. Fifa 19 Highly Compressed 15mb For Pc