You have my sympathy OP.
My birth was much like yours, ‘cascade of intervention’, utterly uncaring hospital staff, forceps and episiotomy after 48h of labour, no after care, ongoing issues from birth injuries etc.
I’d be led to believe I’d have some element of control over my treatment, and that I could elect to give birth in a way that I felt most comfortable with.
As it was I was induced for being overdue (low risk and uncomplicated pregnancy), on a ward for days, failure to progress, ARM, birth pool not available, decided I couldn’t do that anyway as long labour, baby turned out to be back to back, had no pain plan without pool, ended up with epidural, no ‘walking epidural’ as discussed at NCT, just on a bed on my back with wires coming out of me, not allowed to move, legs akimbo with an army of people looking at me. Ended up with forceps and episiotomy after 48h. Could barely walk for weeks.
I’d been led to believe instrumental births were uncommon too and they aren’t. I had ‘no forceps’ on my birth plan but… it’s not a choice is it. And as you say, giving informed consent difficult when you have not planned for this outcome.
The conversations I’d had at NCT and with midwives just bore no resemblance to what actually happened.
I don’t think there was any interest in me as a patient, managing my pain etc. It took me a year to stop waking up in the night panicking about it.
I felt completely degraded by the whole thing. It’s put me off having another.