Being late to an interview is one of the worst things you can do. It sends a message that you don't value other people's time and that you're not reliable. As a result, the interviewer is likely to assume that you're also incompetent, lack discipline, and have a bad work ethic.
Job hopping is an instant red flag for employers because it indicates that you are not planning to stick with the company for the long term. If the interviewer spots any sign on your resume that you're a job hopper, they will interpret that as disloyalty.
Employment gaps aren't a big deal unless the gap is big enough to make the interviewer suspicious. A gap lasting a couple of months is usually fine, but one lasting more than a year will need some explanation.
A good reference is highly responsive and easy to get in touch with. If you're not sure whether a particular reference will be responsive, it's best to err on the side of caution and leave them off your list.
Your interviewer is bound to be interested in why you have changed industries multiple times throughout your career. To a company, your inconsistent career path signals that you're not ready to commit to them and are still finding yourself.
When the interviewer asks you for the reason why you are leaving your current job and you start bad-mouthing your past employer, that's a giant red flag. Avoid doing this at all costs!