Bad idea. Bad for your middos, bad for your reputation (if someone catches on), and bad for shidduch prospects (if someone knew you were no longer married, maybe they would have an idea for you).
My suggestion? Just say the truth in as subtle way as possible.
Examples:
What’s your married name?
I went back to my original name which is _____ .
Where do you live?
_____ Street.
What does your husband do? (trickier one)
I haven’t kept up with my ex-husband.