Banknifty next target -50,000. But before that ?

As per Fibo levels as you can see in the pic the levels have been clearly provided. The next 1st immediate target is 48900. Then we will see 50,000. But at 48900 we can either see a retracement back to 47450 before going back to 50k. So, once we touch 48900 exit bullish and wait for either retracement or further upside