Your seed phrase is the main key to your wallet. That's why it's extremely important to keep it safe and not to share it with anyone else. Unfortunately, if you haven't backed up your wallet or lost your seed phrase, that means you've lost your wallet also.
We will not be able to help you restore it as we haven't got any access to your data, including your seed phrase. Our users are exclusive key-holders, and seed phrases are never copied to any servers or sent out of your device.