Scars backstory

Over the years we have received 3 different backstory’s for Scar all contradicting each other and none confirmed to be the true cannon so, what backstory do you guys believe is the cannon and real backstory for Scar and why he wants the throne

1.) The “Tale of 2 Brothers” take, with him getting his Scar from water Buffalo

2.) The Lion Guards magical version with Scar being infected with poison from a snake twisting his mind, with it making him want to kill Mufasa, his own brother and steal his throne after he mocked him over the story of his Scar and nicknaming him after it

3.) “Mufasa:The Lion Kings” build up of Betrayal, with Mufasa being everything Scar wants to be and eventually even gains the love he wants and feels entitled too

4.)Or do you have your own headcannon or theory of why Scar is how he is

I personally just believe Scar is petty and Jealous of Mufasa , there’s nothing major to explore, he’s just the petty little brother