Since you are sending from a Blockchain.com wallet, the option of speeding up your transaction using RBF is not available to you. Who were you sending the coins to? The recipient could perform a CPFP transaction if you are in a hurry for the transaction to confirm, although this will incur a cost. If the transaction is not urgent, then just be patient.
Thanks for your fast and helpful support.
Actually, I wanted to convert some of my BTC to USD through an online exchanger. They gave me a wallet address for sending BTC. I sent them my BTC when it was $10.084! The problem is that BTC fell to $9600 today and my transaction has not been confirmed yet. This long waiting time made some losses for me. I placed my order at $10K but I don't know how much I will receive in my Perfect Money USD account. They should be really generous to calculate my conversion based on yesterday's exchange rates.
Maybe I'm lucky enough and at the time of confirmation, BTC rises again to $10K!