When you recover your account using a recovery phrase, the Uniswap Wallet will find all accounts associated with the phrase that have a balance greater than $0.
If you don’t see an account, it may be because it has a $0 balance.
This does not mean you have lost your other accounts. After importing your recovery phrase, you can still add the account you are looking for.
To add these accounts, you will need to follow the steps of creating a a new wallet.
Follow the instructions in this Help Center article: How to add another wallet to the Uniswap Wallet