NGTI interview questions

After I applied for the job, I received an email to schedule an online interview via Zoom with a hiring manager. While Interview she asked me a few questions about my experience and why I wanted that job. After that, I didn't receive any response or feedback from them. After a month, I send the hiring manager another email, and she never replies to it. This is very unprofessional because that I made time and energy for this interview.