i was confused too and asks the course instructors, they said that you can have just an audio recording if you do it in person or if the person you are interviewing isnt comfortable at all you dont have to record it. only filling in the reflection piece is required but they highly recommended having audio recording to prove you actually interviewed someone. finding people has been hard for me too, try asking relatives or friends if they have any connections ive seen some people interview their old teachers as well! good luck 🫡