Hi

We hope to include support for more add-ons with future updates. However, the team is evaluating how to do this in a way that avoids the security and compatibility issues we had with previous versions of Firefox.

want wallet in firefox android metamask

This add-on is not currently available, but may be included in a future update.

want to get back my wallet seed and private keys

If you do not have a backup of this information, it is very doubtful that you will be able to recover this data.