Rockstar delisted the original version of San Andreas from most digital storefronts to promote the remaster. However, if you want the 2004 experience (and the ability to use the famous or MTA multiplayer mods), you still have options:
Easy to install; runs natively on Windows 10 and 11 without extra patches. gta-san-andreas-pc-download-pc-game-download-2023
Before downloading, ensure your rig can handle the version you choose: (Remaster) Original Version (Classic) OS Windows 10 64-bit Windows XP / Vista / 7 / 10 Processor Intel Core i5-2700K / AMD FX-6300 Pentium III or Athlon Equivalent RAM Graphics Nvidia GTX 760 / AMD Radeon R9 280 64 MB Video Card (DirectX 9) Storage A Quick Safety Warning Rockstar delisted the original version of San Andreas