Yes,there is plenty of scope.Since you are starting and going for online platforms for freelancing ,I would suggest keeping a document (a portfolio) displaying your work examples or the projects that you have worked on.They are essential to let your to-be-employer know about your experience and skills in relevance to the requirements of the projects they want done.
Even UpWork is a good platform.Though they take a lot of percentage of your income (in the beginning) but if you work with the same employer on numerous projects that percentage gets reduced.Also there is less competition there.