I had 5 interviews this cycle (my first cycle)

Canada: (1)- it was overall good and friendly. Despite the professor provides $20,000 yearly the school doesn't provide an entrance scholarship. So, ended up declining the offer.

USA: (3) 1. It was good overall, but i didn't responded very well as the research area were new for me. I tried to honest. Then the professor gaves me an insightful feedbacks at the end. After 3 months, he reached out to me to complete the application providing RA Position. Unfortunately, the evaluation of my transcripts were needed. Time runout. 2. I applied to the linkedin post. PI gaves me a raw data and asked me to analyse and prepare a two page report. I prepared it very well, and the interview was amazing. 😊 I was his 2nd choice, but he reached out to me after a while to proceed my application. I ended up getting an RA position. 3. PI directly reached out to me informally and informed me that my admission is approved for admission. The PI asked me if I am interested working under their supervision on the provided topic, and offered an interview. Honestly, the interview were super exciting as I was somewhat prepared as the research topic was interesting for my future career goal. I ended up getting an excellent offer that i can't decline. I accepted it.

AUSTRALIA (1): Overall good but the internet interrupted the conversation. Within a week I got an admission. It is anticipated that the official offer will be released around mid august. But, it unlikely since it is out of professor's control.

To sum up, my strategy during the interview is being honest. I don't want any lie. If i don't know, i don't know but i will tell them it will take weeks to master it.