Using cheats to auto-complete missions in GTA San Andreas is strongly discouraged. Cheats break the carefully crafted experience, skipping story, characters, and world exploration. They remove the challenge and reward that make overcoming obstacles satisfying, and some cheats can corrupt saves or make the game unplayable. Instead, progress legitimately: practice and experiment with different weapons, vehicles, and approaches; learn the map, gang territories, and RPG stats like stamina and driving skill; consult guides on GameFAQs, YouTube, or wikis for detailed mission walkthroughs. Embrace the journey—San Andreas is best enjoyed as Rockstar intended.