RERA checks for Gurugram projects: What's real?

Okay I'll be honest — even working in real estate, verifying RERA for projects like Birla Arika feels opaque. Are RERA complaints actually effective? What red flags do you check beyond registration number for builder delays, say with Sahara Infrastructure? I'm a first-time buyer myself, looking in Gurugram, and this whole process is giving me sleepless nights. Especially with all the news about delays, it's hard to trust anyone. Any tips on how to really dig deep beyond just the RERA portal?