Hey @The-girl-with-the-fish welcome to the forums! Glad to have you with us. Sounds like you are really struggling with staying on top of things this year. I think it's pretty normal to start to feel swamped as you get further into high school - the expectations of the workload can start to get pretty hectic! Do you have a school counsellor or learning support centre you could check in with? It might be helpful to get some support or coaching to help you manage the workload. The idea is for you to succeed, so there should be some supports available that you could look into 😊
It sounds like maybe you didn't fail any of the assignments, but didn't do as well as you'd have liked. Still, this article might be a helpful read: Failing a course or subject
Creating a weekly schedule for yourself could also be helpful, if you haven't already. Including space for working on particular assignments is important, but also scheduling in time for fun and relaxation is also important - you don't want to burn yourself out!