My first home agreement shocker

Builder agreements are totally one-sided, it's crazy. I'm looking at a 2BHK at Sattva Lake Ridge, Kokapet. Salarpuria Sattva ka agreement dekha, it feels like saare clauses sirf builder ko favour karte hain. Agar possession delay hua ya kuch issue aaya, hum buyers ke paas kya options hain? RERA complaints file karna Hyderabad mein kitna effective hai, honestly? My parents keep saying check everything, but I'm not sure what to even look for. Any experiences with builder delays and RERA here?