Blockchain.info's web wallet is considered a poorly written wallet and is seemingly incapable of sending proper transactions with correct transaction fees and confirmed inputs. If you are using blockchain.info's web wallet and your transaction is stuck, it is almost definitely because the transaction fee is too low (at 120 sat/byte which seems to be blockchain.info's default fee rate even though it is much too low) or because you are spending from other unconfirmed transactions.
If you are using blockchain.info's web wallet, unfortunately you won't be able to attempt RBF or CPFP transactions as blockchain.info does not provide the advanced functionality to make those transactions. All you can do is ask miners for help and wait. For asking miners for help:
sieht so aus als wenn Doubel spend bei Blockchain info wallets nicht gehen sollte
