Please don't be so hard on yourself....
Free Motion Machine Quilting takes years to perfect.
I took a class thinking that "I" would then be a FM quilter. What a joke! It is hard and takes lots and lots of practice.
Yes, you can take your quilting out.
I for one do a lot of stitch in the ditch, echo quilting, or straight lines. Don't be afraid to mark your quilt with a blue pen so you have something to follow.
(or better yet, like I do most of the time, sent to the Long Arm Quilter.......0
But, please don't give up!!!!!!!!