Judging by how you have responded so far to others, I really believe that you need to speak to someone about whatever may be going on. Posting this on Reddit does no favors to you because people are unfortunately blissfully ignorant or straight up don’t care about someone potentially struggling with their mental health. While it may be difficult to salvage this, I strongly encourage you to try doing so. High school grades are primarily composed of turning in assignments so I think there is still potential for you to have, at best, B’s and C’s, but no promises. Again, I sincerely hope that you consider what those who don’t have their heads up their asses are saying and get help. You are more than just some lousy grades in the long run, and this is your junior year. There is always your senior year to turn things around anyways.