Moving from your area, have you thought about an in-house position in another industry? Or you might like the legal sales rep role if you’re keen on client facing. I work mainly with corporate and private client lawyers. You could have a think about transitioning to the trust side of private clients. There are also lots of family office roles you might enjoy.
I like the idea of the trustee role on the side - it’s a good first step whilst you rethink.
You haven’t mentioned property, but you might not enjoy the sameness of conveyancing... but, if you like property in general, you might still enjoy an in-house role in the industry. There are some really interesting jobs out there.
Sorry to hear your interview didn’t go well. I tend to think of any first interview following a decision to leave as a practice run. I tend to fail miserably, but nail it the next time. Don’t be afraid to put yourself out there. You can only learn from what went wrong and fix it for the next interview. Don’t be too hard on yourself. You’re clearly a smart woman.
My final advice here is to know your worth and if there’s a role you aren’t sure you can do, you can bet that any man wouldn’t let that stop him (making assumptions here and sounding very sexist - I just know many women who won’t apply for roles because they think they can’t to it, plus there are studies on this, so I hope no one is offended by this comment). You have the right skill set, so focus on that.
Good luck!