You're right about watching an expert traders video on YouTube but i strongly believe what the OP lack was not understanding how the market revolves because day trading is totally not applicable for every market trend which was the reason he make debt despite his knowledge about price analysis.
No matter how many videos you watch and how many times you watch it, you will find more things to learn when you start trading. When you suffer a loss, you must learn from it, what happened, why it turned out to be a loss instead of gaining profits. Take notes and make sure that you don't commit the same mistake again.