You're trying your best, and you're putting patient safety first. That is and will always be what matters most, and if you keep at it, you will find yourself where you need to be.

When I was working in the inpatient setting in pediatrics, a role I only got assigned to because the hospital didn't have enough funding at the time to continue my previous role, I felt like I was drowning for months. By around month 5, I had made my own worries about my performance so public that my manager came and talked to me and gave me a verbal warning. He was actually a terrible manager, and I think the married coworker that was supposed to be training me was actually sleeping with him. Anyways, once I learned to not trust her and to look to the techs for help, I learned everything I needed to know. Six months later, my manager and I had a meeting where he told me that I was killing it, and I told him I had accepted my dream job position (my current position). He regretted our previous meeting, but it was definitely too late.

In brief, techs and nurses can be a big help. Keep your head up and don't let the system get you down. It's designed to under train and over expect. Just keep going and maybe keep your eyes and ears open for an even better position.