Teenager suffering with self hatred

[GreenPlantMama]

My 17 year old ND non binary child struggles with self belief and is plagued with self doubt, and they've just told me they hate themselves.
They are about to start university applications, but have convinced themselves that they won't get in anywhere (AS level results of AAB, they're very academic and passionate about what they want to study). It doesn't matter what we say or how we say it, they just don't believe in themself and it's exhausting - for them and me.
They struggle socially sometimes - don't want to message people to ask to meet up in case they get rejected, so spend lots of time on their own (only child, both of us work full time).
I think they're amazing, kind, generous, funny and all over beautiful person, but it makes me sad to see how they about themself.
Anyone out there with similar teenagers and/or advice...?

Could you help facilitate social events? Text the friends from their phone and help them find activities they may enjoy. Try meetup.com The more they get out and about, exercise in the fresh air, the less time they have to wallow.

Have you thought about counselling? They'll have an outlet then and will learn strategies to cope.

Sending hugs to you and your DC op. A reminder to you both that this is a phase in their life, not a predictor of how their future will be.
I agree with counselling. I would just add, do they do any extra-curricular stuff? A job? Volunteering? A PT job related to something they're interested in could help them get out of their spiralling thoughts and head

Thanks for your reply - they would be mortified if I texted from their phone, but have suggested that they reach out to individual friends (they tend to just use group chats which is overwhelming in itself) and just suggest meeting up for an hour or two so there's no pressure. We moved from our close knit village to a town a few miles away a couple of years ago - they used to go off walking quite regularly, but not so much anymore.

Counselling is a good shout. They've got support they can access at college, but maybe I need to find them someone privately that they can be open with.

Rejection sensitivity disorder can be crippling particularly in ND folk. A gap year sounds like it maybe a better choice to try something they are interested in to slowly slowly build some personal confidence in other ways. My younger teen DD struggles a lot with self belief, rejection sensitivity and is autistic but by allowing her to follow her passions on her own terms she’s finding her ability to ‘fail’ a bit in order to grow her skills with trial and error is empowering her in other ways