Any tips/suggestions on how to avail better discount on flight tickets?

I have seen a video where they mentioned. I tried and found them cheaper for many domestic routes. Difference was easily between 1-2k: https://www.skyscanner.co.in/ https://www.kayak.co.in/ https://www.momondo.in/ https://www.cheapflights.co.uk/

SBI credit card reward points can be redeemed to buy discount coupon on Yatra. Generally get 4k discount on 25k points

I just use Flipkart flights + apply the best offer they have + a Flipkart Axis card for another 5% off.