Is Minecraft Available on PlayStation 3?

No. Minecraft was never released for the PlayStation 3. It launched on PS4 (2014), PS Vita (2015), and later PS5 via backward compatibility, but the PS3 was skipped due to hardware limitations and the console's end-of-life cycle.

Alternative Ways to Play on PlayStation

• PS4 / PS5: Full Bedrock Edition with cross-play.
• PS Vita: Legacy Edition (no longer updated).
• Remote Play: Stream from a PS4/PS5 to a PS3? Not supported; Remote Play works on Vita, PC, mobile.

If you only have a PS3, consider similar sandbox games like Terraria (PS3 version exists) or LEGO Worlds.