Yes, we know you are only in 7th grade, you wrote that in almost all your posts. I understand you get frustrated - don't we all sometimes ! But hollering for help is not the way. You got to have to learn to keep your cool, and patiently explain, in great detail and clear terms, what you tried and what the result was, instead of just saying "nothing works" or something equally vague.
If you Google it, there seem to be a lot of posts about clearing the Jupyter console. Surely you tried some of the suggestions ? Details ? Results ?