@IdanaHamz You can manually mark the chapter as Read by clicking on the eye icon on the left side of it, yes. Also you don't need to click the plus button manually each time you read, adjust the number of the chapters read, then after that, if you read the next chapter, it will automatically add your progress.
Example: You read 12 chapters of this series before following it. Click the edit progress button, enter 12 into the box of chapters. Then next time, when you read chapter 13, the progress will automatically increases by 1 to 13. If you read another chapter 12 released by a different group, or gap chapter 27 or something that another group randomly releases, then the progress won't increase.