Hello there, @marian_lisgo ...
I am sorry to see that your question has been sitting out here for several months without a response. I am not sure if you are an instructor or a student. And, since the vast majority of Canvas Community members don't have access to your school's Canvas environment or your course(s) in question, this will be a bit difficult to answer. However, generally speaking, I would say that you should reach out to your instructor (if you are a student) or someone from your school's Online Learning/eLearning department (if you are an instructor) who might be able to tell you more about the content you are looking for. If you are a student, it may be the case that the instructor has not yet made the content available to you. If you are an instructor, then you will probably need to have a discussion with people at your school to see what their plans are/were with the transition from Blackboard to Canvas.
I hope this will be of some help to you. Sing out if you have any other questions about this...thanks! Take care, stay safe, and be well.