Use 5% of the position to do 50 times or 100 times, if you lose 500%, then increase the position

Every day I lose money, the more I want to make it back, the more I lose. What should I do? This thing seems to be the same for everyone, right? It's not a single-player mode, is it? It's so frustrating. Losing money is really hard to bear. I'm numb and exhausted every day...