Go to your GTA San Andreas installation directory (e.g., C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto San Andreas ).

Are you running the version, or are you trying to mod the Steam/Rockstar Launcher version?

The original game was designed for 4:3 CRT monitors. Without these files: The image is , making CJ look wider than he is. The FOV (Field of View) is cramped. The HUD elements (radar, weapon icon) become oval-shaped.

The gold standard for this issue is the GTA SA Widescreen Fix. It doesn't just unlock 1080p; it fixes the UI scaling so your map and health bar aren't stretched horizontally.