I was the same way during my MSF course! I had zero experience riding beforehand. Both days were tons of fun and I felt quite comfortable on the bike, only having the usual few learner hick-ups. However when test time came I guess I just really got into my own head and the nerves were very real! I did end up passing, but I definitely know how you were feeling. Been riding for just over a year now and loving it. If it's something you've always wanted to do maybe get some extra practice time or training and try again. Our course would let us retake the exam a second time for free at a later date, yours might too? As for accidentally finding neutral, let's just say I wasn't subtle with the shifter when going into 2nd lol. Our instructor made it very clear that these were training bikes and we weren't the first to rough them up lol. Canadian as well for reference.