Atomic Wallet gives you full access to your private key, public key, account ID, and 12-word backup phrase. You are the master of your own funds. Both your private keys and your 12-words are stored in the same place.

Here are instructions from Atomic on how to view your Hedera private key and backup phrase: https://support.atomicwallet.io/article/19-how-to-view-your-private-keys-backup-phrase