A good trading strategy is important, but what traders need to succeed is not an absolute strategy that gives 100% winning. A 60% winning strategy is okay if you can work on your trading psychology and money/risk management. As simple as the two are, they've reshaped my trading results for good.
Reshuffle that mindset and see the result in months.
Every strategy must be tested and if they should pass the test that is when we should conclude that ii is a absolute strategy. If it were not a personal thing I would call anyone who calls a strategy absolute as a scammer.
If it works for you continue to use it. Discard it if it doesn't.
Next an strategy must have a back up to it our claims. That is how you intend to manage it when it doesn't work as it should.