I cannot install games for you—I'm an AI. But here's how to do it yourself on a PSP-3004 (PSP-3000 series):
ISO/ (for PSP games) and GAME/ (for homebrew).ISO/.Buy games on PlayStation Store (if still accessible) or purchase physical UMDs. No CFW needed, supports developers, zero risk.
Research thoroughly before starting. Follow a current, model-specific video guide. The PSP homebrew scene is mature but unforgiving of mistakes.