Recover missing accounts from Metamask Extension

The first thing that you should know is you can never delete your account from the MetaMask accidentally. Once the account has been created on the wallet, it will stay forever on the blockchain network. So, your account has not been deleted from MetaMask. Though, you might have deleted your metamask extension or its mobile application. If this is the case, you will have to reinstall the extension or the mobile application, whatever you want. And then you will have to restore your wallet account with the help of the Secret Recovery Phrase.