King rawana

What you know about rawana and you believe him?

By Indian Hindus, he is seen as a monstrous villain with 10 heads - according to them, he wanted to marry Sita, and as a result of this, Rama rescued Sita and defeated him.
However, by others he was also known as a wise and brave devotee of L. Shiva; he was granted the ability to use divine weapons. He came from a highly revered family and he was born to a great sage; he was also very knowledgeable. It can also be said that the fight started because Lakshmana cut off Surpanakha's nose after she proposed to L. Rama. It can be said that what Ravana did was anything that a big brother would have done to avenge the injury caused to his younger sister.

I don’t believe in him, since I am Muslim.

Yes you are right.according to our resources sita was rawana sister,that why he came with aita to lanka,🙏