@Mattches Importing from existing Crypto Wallet doesn’t require a seed phrase. Since OP said -
I think he didn’t followed procedure for Crypto Wallets and Restored directly with the seed phrase. However, as it says here-
All Primary accounts should recover but I can also confirm that Seed Phrase only recovers First Account both in Meatmask and in Brave wallet (New).
@azteksson You can access old wallet. Go to brave://settings/wallet and change Default cryptocurrency wallet to Crypto wallets (deprecated). If you get access to your old accounts, make sure you save private keys for each account this time to be able to restore them later.