How to save data from prefabs?

Question

Unity

I read about saving, serialization and player prefs, but it's not that. I have a prefab that I need to save data to. Then I just make a copy of it and for this copy I have to change the public data in the inspector + a picture (for example, hp, damage, etc.). How to make a save for this? I did it through player prefs, but it saves everything under one, then you have to do different scripts, how can you save everything using 1 script?
So that I can throw the second, third, etc. prefabs, change the data and they are saved and do not overwrite each other

Answer 1

Why not make it public, static. To be one and for all