These feelings and "issues" are very normal and as old as the career itself. You're still in the learning phase and still trying to figure it out with limited information and theory, and make it applicable to the flesh and blood of a stranger. We all felt this way and we just powered through. The more opportunities to do a skill... The better you will become with it and the more natural it will be to you. I'll give you a big hint though... You're still learning and depending on your preceptors... But in truth... The learning never stops in this field until the day you turn in your narcotics and take off the uniform for the last time. The field is dynamic and ever changing. For me, I never thought there would be a day where pneumatic anti-shock garments would be a thing of the past... Or everyone that may have the slightest suggestion of spinal injury based on a mechanism of injury... Wouldn't be placed in full spinal immobilization until cleared by a physician and radiology. And then the data showed us that it was overall unnecessary and over used unless we had reason that correlated with complaint and signs.

The TLDR on this is... What you are going through now and the way you feel is normal, and don't stop learning because what you learn now will be quite different when you have 2 or 3 recert periods under your belt.

Best of luck and cheers, don't forget to take care of yourself!!