I forgot my password of Blockchain Wallet and i tried to recover from (12 word backup phrase key but it has generated a new wallet) on the same 12 word backup key and it has different (wallet ID) but my funds couldn't recovered, so i need guidance to recover my funds from Old wallet into new Wallet any idea what should i do?
Use https://login.blockchain.com/#/recover and note that it says
Recovering your funds will create a new wallet ID.
The recovery phrase generated in your Blockchain wallet is compatible with other bitcoin wallets that implement BIP44/BIP39.
So you can go to https://bitcoin.org/en/choose-your-wallet and select any other wallet that supports BIP44/BIP39. Then use that wallet to recover control over your money by selecting wallet recovery at startup and entering your recovery phrase.