Studying for drivers tests in Michigan state... I'm nervous.

Hello, I'm 21F, almost 22, and do not have my drivers license yet. I want to pass both the written and physical test before my ID expires in late April on my birthday. But the issue is I'm supremely nervous. I don't know how to study properly at all. I have the handbook issued by the state / DMV, and I have multiple practice test sites bookmarked that I cross-reference onto a google doc to review now and then but I have no confidence in both my ability to drive and my ability to pass. Tests aren't my strong suit, and I'm so terrified of fucking up my physical test so bad that they forbid me from getting my license... if that's even a thing. I have little to no confidence in my ability to make myself, my parents, my peers, and my friends proud of this genuinely major milestone.

My mom has taken me out for a few practice tests- driving around a parking lot, learning how to use my blinker, windshield wiper, and other buttons, she's had me drive both at a slow pace and also going 45-50 on a backroad after it rained (I got experience driving on a wet dirt road so I reckon that's REALLY good) but my main issue is focus. I can focus on certain things but driving is... a lot. It's focusing on everything at the same time and trusting that I won't accidentally kill someone or myself in an accident. I do good on practice tests, and despite my mom's complaining when I brake too hard or stop a bit aways from stop signs (legitimately how do I brake gently and properly stop behind other cars the concept of bumping into another car's rear makes me wanna sob into my pillow.)

I feel like a total flop. I CAN drive, just not well. I CAN pass practice tests but I struggle with things related to motorcycles, bikers, and other general road laws. I don't know what exact subjects to study in order to guarantee success on my first test. I NEED to pass before late April... What do I do my brain doesn't want to study it wants to play videogames and sleep and futz around by I want to succeed... Please help me out here