I am usually able to solve two or more questions in competitions, always achieving a score of around 4000. Now that I am green, I haven't even solved a single question in this competition. Is this a degradation of my abilities, or is it just a poor state, or is it due to psychological reasons. Obviously, I lost points. I am both confused and distressed about this. And if I have any problems, how can I improve in my future practice and competition? I hope all the experts can provide more guidance, even if they only give me a little advice. Thank you.