Once a transaction is recorded in Mempool there is no way to cancel it. However, you can control the speed of this transaction by reducing and increasing the transaction fee. And if your transaction is pending for a long time for a small transaction fee and the block is not confirmed, then it will automatically fail the transaction. But you cannot cancel the transaction manually. This is because Bitcoin cannot be controlled by anyone, it is completely decentralized.  You can't control it at will, it runs on its own rules