You are right, @op. People keep changing strategies because they are trying by all means to avoid losses, which is quite impossible. Trading requires consistency in addition to the skills and knowledge already acquired. No matter how good a strategy may be, there will still be some bad days when losses are unavoidable.
For those who are still trying to find the best strategy to minimize their risks and maximise profits, they can start with a small capital. Then, over time, when they find what works for them, they can scale up.