Hi @vaghasia,
Thank you for your question and welcome to the Bunnings Workshop community, it is fantastic to have you with us.
Unfortunately, from the photo you've provided, it would be impossible for me to offer a solution to the leak as I can't see where it would be coming from.
The risks involved in working on a roof like this are great and I wouldn't advise it unless you were very comfortable getting up there.
I'd suggest that this one is probably best left to the professionals as they will be able to safely get up on the roof, diagnose and fix the issue without damaging any tiles in the process.
Let me know if you have any further questions.
Jacob
