Play PS3 games by jailbreaking on PS4?

The game "LittleBigPlanet 2", which was only playable on the PS3, was my childhood and I would like to play it again. However, I only have a PS4 Pro (and other consoles if this is important) and I can't get a PS3. Today I saw a video about PS4 jail breaks and the video says that you can play PS3 games on the PS4 by jailbreaking. Is this true? I want to play online with a friend who only has a PS3.

I thank you in advance for your answers

You can't jailbreak your pro, most likely you don't have the right firmware for it.
You also can't play online, and if your ID is banned, have fun, you can only play offline forever ^^