The rating and reviews are the very important in freelancer.com or upwork.com. So without any rating and review, it’s very hard to get a job.
My suggestion is that don’t try to bid at the beginning. Try to collect some ratings and reviews at first.
Try to contact with some freelancers in your local area and convince them to hire you through freelancer or upwork. Maybe you will lose some amount due to freelancer/upwork project fee but it will help you to get your 1st international client. Try to think in long term. Once you get some ratings and reviews then it will help you to get new projects.
Never accept any project without getting a milestone from your client.