What nobody tells you about RERA in Gurugram

Okay I'll be honest — I'm finally taking the plunge into buying property in Gurugram, fed up of renting. EMI vs rent math is finally making sense. But this whole legal side... I'm a bit lost. Builder-buyer agreements mein kya red flags dekhne chahiye? Matlab, often they're so one-sided, right? And RERA complaints, are they actually effective? Kisi ka real experience hai M3M ya aise bade builders ke against? Not sure if it's just on paper ya really helps with possession delays.