RERA doesn't really protect home buyers, does it?

My lease ends in 3 months. Fed up of renting, landlord ne phir rent badha diya. I'm finally looking for a 2BHK in Noida Extension, maybe Sector 137 or Wegmans Signature Tower. Builder delays aur legal issues ka bahut darr lag raha hai. How do you *actually* check RERA registration and a builder's track record, like Sampada Group's? Just the website, ya deeper research? Aur builder-buyer agreement mein kya red flags hote hain? Clauses always favour them, right? Agar builder project delay karta hai, RERA complaint kitni effective hai? Will I get compensation ya bas time waste hoga? Koi real experience share kar sakta hai kya with RERA in Noida Extension?