The idea of a "free script" to hack unconfirmed blockchain transactions is a common . Real blockchain transactions are secured by cryptography; modifying them would require a private key, which hackers do not have unless they steal it from your device.
Most .txt or .zip files labeled as "unconfirmed transaction hacks" are designed to steal from the person who downloads them. The idea of a "free script" to hack
Blockchain Transaction Approval & Validation Flows - Fireblocks The idea of a "free script" to hack