First off, you are not a failure.
Secondly, sometimes students forget; sometimes they are worried about having such direct contact with someone they don’t know very well yet; sometimes they have jobs; sometimes they don’t know what they’re doing and don’t want to look stupid, so think it’s better off to not respond.
I am not sure about what kind of class/course you teach or the expectations you’ve laid out in your classroom (or what is even expected in your school), but I would then just have the students be ready to show you what they have done in class. When you next expect them to do something like that, look at what you’re asking them to do and maybe be more specific. Give them reminder checklists, or sign up for Remind: https://www.remind.com.
Reflect on your own feelings and what you need to do based on the needs and experiences of your own students.
Good luck! Keep believing in yourself.
Teaching In Real Life 