I've had an elective CS, and two vbacs.
Vbac1 left me in hospital for a week because they had to repair my undercarriage. Vbac2 left dc3 with brain damage.
To be honest, CS are entirely commonplace, and whilst the thought of any surgery is enough to make you worry, I think you are being a total drama llama.
elective cs is entirely calm and well thought out, with lots of staff on hand to deal with any issues.
You can choose whether you want a GA or just a spinal, whether your partner is there or not (in scrubs lol), what music you want playing etc etc.
Just chat to your consultant. There's really no need to fear an elective CS at all. They are very ordinary. And don't swallow the usual hype about vaginal births being the be all and end all. Healthy baby and mum. If you can't have a vb, it really isn't an issue, and whilst you have the right to feel sad about it, it's pointless to get yourself worked up.
Having a CS isn't brutal, and it isn't horrible. If it's medically necessary, educate yourself and lose the hysteria. Knowledge is power.
I'd rather have another CS than mangle myself, put myself at further risk of incontinence, or brain damage another baby, to be honest.