Where do I find private keys?

You can find your private key by tapping Security and then Backup Phrase within your profile. You will be required to enter your passcode or biometrics to access the security section and your wallet password to reveal your backup phrase.

Please note that if you have lost or forgotten your Backup Phrase, there is no way to reset your password and you will lose access to your funds. Therefore, please ensure that you keep your Backup Phrase safe and secure at all times.

The article below explains the importance of your Backup Phrase.
https://medium.com/zumo-money/how-to-keep-your-private-keys-safe-398fa0a52789