Broken games that are scratched can seldom be repaired completely
You can not download any quick fix to have a PS3 play PS2 games.
The lens/laser could be broken.
sell it and buy a ps3
All PS3 models can play PS3 games and also select PS1 games
no you can download just ps3 games on you ps3
A PS3 can play PS3 games and some Playstation games
there are no Pokemon games for ps3
Take it to a shop
yes
You don't fix it you replace it if it does not just need the controller setting adjusted under ps3 setting. If the other dual shock 3 controllers work fine it is not the settings
No PS3 games require a PS3 platform
PS3 games are supposed to be region free