Oh, I know this feeling! I've only had my machine since the end of March. Took me awhile to get it set up & running. I'm still having issues with the frame, as the rollers keep hitting spots on the rails where it's not quite smooth & the machine follows that line instead of where I want it to go.
I agree with all of the above. Practice, practice, practice! Doodle, doodle, doodle! If you are on the phone, doodle on a piece of paper or where ever you may have a minute. It creates muscle memory. We all learned how to write our names in cursive & now do it from muscle memory, so we have to teach our muscles to now move the machine in the way that we want it to go.
Don't give up! Like someone else said, compare yesterdays practice with todays & see the difference a day makes. We get better with each & every stitch or design we do, just relax, put some upbeat tunes on, play & enjoy!