Back-End Developer Needed

Hello. I have written a blockchain bot. I used node.js for backend. However, I have a scalability problem. Since there are too many requests ( average 50-60 requests per second, except requests came from frontend) sometimes the respond comes late, sometimes never comes. Can you review the project if you are familiar with node.js and help fixing. If you think it is necesserary, I am also okey to change the database or write the backend again in different frameworks like springboot, laravel etc