Price action traders, How do you select your expiry times for each trade?

hi there, i’m not long back in the bins and i trade only on fibo s/r levels from 15min charts to 4h. Even though my trades are in the money for a long period of time i seem to either lose on a retest break thru of the s/r level or just lose and then the price comes back ITM when its to late and continues on in that direction.
I know the expiry time should depend on the timeframe being traded but i would like to hear how other traders pin point their expiry times :28:

I am also after the charts but in the main trend of 15 minutes chart, trends showing downward direction, however at the same time looking at 5 min chart is more confusing because it showing an upwards trend. After searching internet, I have found a useful link for Price Action Strategy, hopefully it will be helpful for others too.