Survivorship Bias is very common in the market. Only way to overcome is to see the flaws each strategies have. Post the trades you took in simple three lines
Strategy Type: Neutral (Volatility)
Instrument chosen & Levels : Long Strangle of Nifty 10750 PE & CE taken at 27% Volatility levels.
When market increases Volatility reduces, and the elegant long straddle starts losing money on both the legs. Earned 4K INR the first two times trading same strategy. Did not learn about the volatility when I made money. Third time lost 8K INR. Learnt about Vega can be a siren colluding with Theta .