Hi Nitya! There are a lot of content marketing companies that hire freelance writers (aka "contributors") to contribute stories for their clients (companies that have a blog or another medium they need stories written for). Definitely check out Contently (that's the one I know best since I've written a couple articles for them!) to read more about it. Happy to answer any follow on questions you may have if I can. :)
A few words of advice: If you want to write you've got to just write. Write about everything, as often as you possibly can. I'm sure you want to kill two birds (getting experience and getting paid), but if you're serious about writing and can't find a way to make money doing it right now then you'll need to find another way to make some money and keep writing regardless! The more you write, the more confident you'll feel with the process and what you create, and I promise that confidence goes a long way.