https://www.musical-u.com/learn/finding-tonic-in-minor-keys/
As we have seen, identifying the tonic note in minor keys consists of recognising the key is minor, and using the notes of the melody and harmony along with certain “clues” to identify the tonic note. It’s important to know about common minor-key cadences to help you tune your ear into the role of the tonic in these harmonies. https://www.musical-u.com/learn/finding-tonic-in-minor-keys/