The people most likely to sign up for coaching or additional learning are the folks who are already good at their craft.
“I’m terrible at this,” can lead to, “and I don’t want to be reminded of it.” Or perhaps, “I don’t want to waste their time,” or, “I’m never going to get better.”
When it’s possible to get better, embracing mediocrity isn’t a useful strategy.
I’d rather have a surgeon who regularly attends trainings, wouldn’t you?
Read a book, find a coach, organize a group. If you’re serious about getting better, you’ll improve.