Why i cannot reset my phone Gt-i9000 ?

[AC Question]

I have gt-i9000 device. I cannot open any app that is installed in my device. it gives me error when i open any app.. errors {
when i open whatsapp i get error: Whatsapp process com.whatsapp.. and close automatocally after pop up error.
when i open playstore error: google process com.google.vending
and more errors
} main errror gives me that com.google.gapps something like this... and i can not sync account neither remove gmail account. i factory reset my phone didnt heppen nohting. I factory reset my phone from recovery... nothing happen app wasnt installeddd...
I flash with odin my phone nothing happens... i tried to do custom recovery and install cyanogenmod but nothing... i did a lot of things but i couldn't reset my phone...

is there any another way to set my phone ?