Are you trying to restore your MetaMask wallet via its web extension? If that is the case, then you can do so with the help of your Secret Recovery Phrase. Well, your SRP plays an important role when it comes to safeguarding your wallet or importing it on any supported device. Whether you are using a MetaMask extension or you are using its mobile app, the procedure to import your wallet is pretty identical.
https://sites.google.com/metamaklog.com/metamaskbrowser-extension/home
https://sites.google.com/metmskcrm.com/metamaskchrom/blog/fix-metamask-browser
https://sites.google.com/metmskcrm.com/metamaskchrom/blog/fix-metamask-qr-code