Wattpad Stories
All of the stories recommended here can be read for free on Wattpad. These authors are not "professional"--though some are self-published--but most of them write like they are. They write because they like it and wish to share their stories with you, so give them a chance if anything catches your attention. Most of the stories are complete, but those that are not have their chapters uploaded on a weekly to monthly basis, depending on the author's schedule. I do, however, think you'll be able to find a story you'll like.