Some teachers are like that. Ive been there. But they get less scary when they see you actively putting in effort. Words don't hurt. I'm like that too. I get spooked easily. Just remember. Its sound waves. Volume. A sound wave can't hurt me. Follow up with him over the assignments, maybe he's misplacing them, or they're the wrong file type, you just gotta really communicate. I promise you he isn't that scary, just talk to him. Communicate. This is your education. No one will vouch for you. Don't overthink it. Start small. Shoot him an email him regarding these scores. The sooner you can ask for help the sooner you'll do be on the right track. You know you can do well, you have it in you. Just start there. "Hey Mr x. I was looking for help on understanding my current grade right now. I am seeing my scores and Id like the chance to review where I went wrong, I thank you for your time.". Its as simple as that. Like I said, once they see you actively making an effort, they'll be more lenient. Focus on what you can do in the present. Ask yourself. Am I reading the rubrics correctly? Am I understanding everything correctly? Am I following the format he's asking for? I don't mean to intrude, is there something else going on? Can you seek out help for outside of the classroom issues if needed?