The main and very essential tip for every candidate is to never badmouth their previous working employer or industry.

Always avoid statements like “personal problem”, “personality clash” or “didn’t get along” kind of excuse while answering for your relieving the previous job.

If you are currently having a job, don’t be nervous to answer because you are part of that organization and you know in and out of it. But still you are not allowed for such badmouth so it’s better if you state that why would you prefer to find a new job.