If you cannot dump your own discs, you must rely on abandonware archives.
To make use of a full CSO archive today, you generally follow these steps: CSO File: What It Is and How to Open One - Lifewire cso psp archive full
Do not just hoard CSOs. Curate your archive. Remove duplicate regions, apply English patches for Japanese exclusives, and convert your most-played games to CHD for better integrity. If you cannot dump your own discs, you