RERA complaints are pointless for Gurugram delays, prove me wrong.

Did a site visit to Ameya Sapphire Residences on Saturday and honestly wasn't expecting this. I'm looking at a 2BHK there, budget around ₹1.5 Cr, but my parents keep warning me about builder delays and legal traps in Gurugram. I had no idea how complicated it all is. I'm trying to understand RERA. Is it actually effective when builders like Conscient Infrastructure delay possession? I've heard so many horror stories about people waiting years. What are the *real* legal options if they don't deliver on time? And how do you even properly check RERA registration for red flags before signing anything? Seriously feeling lost here, ab samajh nahi aa raha.