Is my Marriage legal?

Update to https://www.reddit.com/r/LegalAdviceIndia/s/S11btHIa0u

So my wife and her parent have done divorced papers and have asked me to sign it. Luckily they are not demanding anything.

But the divorce paper they have prepared is just a normal paper notarized on a Stamp paper and AFAIK that's not a valid divorce.

The paper simply states we are parting ways and calling off the marriage.

Upon inquiring more, she stated that she got divorced the same way last time and it was not infront of court.

My little google skills have given me the idea that it's not a valid divorce.

So Is my marriage valid in first place? If not, what should be my next course of action.