I'm a 4th year undergraduate from a tier 1.5/2 college in India,will graduate in 2022. I take part in Leetcode contests and always I'm able to solve exactly 2 questions. My placements are approaching, and I'm getting worried that I may not be able to clear even the online assessments of the big tech companies. Also, I need to revise my OS DBMS sections before placements. What should I do now to become a better programmer and get selected for the top product based companies??
Please provide me a roadmap for my preparation with a time of 1-1.5 months, assuming that I'm an intermediate in both DSA skills and CS theory.