Salesforce Software Development Engineer SDE interview questions

Salesforce's SDE interview process includes several stages: resume screening, a recruiter phone screen, a technical phone interview, an optional online coding assessment, and multiple onsite interviews. These onsite interviews focus on coding, system design, and behavioral questions to evaluate technical skills, problem-solving abilities, and cultural fit within the company.

I was rejected in 1st round. It was easy first round. I solved 2.5 questions out of 3 but may be they required more. Please focus on DSA and Computer science fundamentals.