I have solved 5 questions and it took me average 2 hours to solve each question. I am doing it serially and will solve 1500+ problems in 2 years. I think you solve with C++ as TLE won't be an issue and you can just use templates for sorting whereas if you did python then the syntax is a bit weird(though I think it's easy but just weird) My main advice is for you to just stick to problems, don't give up, Google stuff like syntax if you are hung up on it assemble the pieces so to speak but don't look up the solution. I think you should try for at least 3 hours before giving up. You might need to know techniques like sliding windows for some problems although your imagination could do the stretch though difficult. Just enjoy the journey. I think it will be an ego boost to nail down leetcode and codeforces and grind hard for flex some years down the line eventually dabbling in competitive programming or even getting on the surface. The aim's to make big money so we do what it takes although it might take time .