Now my problem is that when I try to transfer bitcoins to hardware wallet, I see a fee of 0.0005 bitcoins, what is the reason for the high fee? A few days ago, it seems that it was 1-2 dollars. Fee will not be reduced? If the fee is not reduced then I will withdraw with this fee.
Before deciding to use a centralized service, make sure to always check the withdrawal fee rate and other details, like the minimum amount required for withdrawal. as well as any potential restrictions or conditions that may apply.
KuCoin Withdrawal Fee Rate:
https://www.kucoin.com/vip/levelYou can also compare fees among various exchanges on sites such as
https://withdrawalfees.com/, for example.