Aren't we lied to by god that satan is a bad guy?

He is only trying to overthrow a tyrant and want to protect humanity against god's tyranny,He want to stop god from sending people to hell for not worshipping him.. when god says "thou shall have no other Gods before me",isn't he admitting that there are other Gods out there?God killed and caused more mischiefs than Satan. Maybe the angels who rebel against god were sick of god's tyrannical rule to , remember history is always written by the victors .God might made himself to be good but maybe he's the bad guy.