I’m very glad you wrote. You’ve been suffering with these questions for far too long. As long as you have no answer, it makes sense you are increasingly “obsessed” with the questions.
At 16, it is normal to be exploring one’s sexual identity. For many teens the question isn’t settled until well into their 20s, so please, first, take some of the pressure off of yourself.
The answer to your question isn’t simple. Longing to be with children may be an expression of, or it may reflect something about longing to be still in that stage of life yourself, or it might be something else all together.
Without talking with you in depth, I can’t resolve the issue for you. I can only assure you that it would be a mistake to land on an “answer” without doing some exploration with a professional who has the ability to get to know you and to explore your questions with the attention and support you deserve.
Unfortunately, I’m not familiar with the services available to you in India. You might find it helpful to talk with your physician to get a referral to a professional who has experience with teens and with questions of sexuality.
I wish you well.