Apollo.io Software Engineer, Backend interview questions

Not serious recruiters. No proper process. Bad candidate experience. Interview has 3 rounds. First round. DSA leetcode medium Second Round DSA leetcode medium Third Round Hiring Manager Recruiters was not able to schedule the interviews properly. Communication with as lagging as its improper invitations without meeting links. Despite following up with recruiters and having positive reviews after each round. After the final round of the interview the recruiter said they cannot match even the existing pay of the candidate.