Why is the fee so high for bitcoin transfer?

Because bitcoin is only one megabyte in each block, and can only handle five transactions per second, miners' fees have risen since the volume of transactions has increased

Blockchain fees depend on several factors including network congestion, transaction confirmation times (affected by liquidity providers), and transaction size (as measured in kilobytes; affected when converting crypto from multiple inputs such as faucet earnings or other micro-transactions).

In other words, you may need to pay higher blockchain fees if:

• the blockchain network is busy or loaded at the moment. Usually, the fee increases during sudden blockchain rate fluctuations and major world events;

• your crypto account has a history of microdeposits (like referral bonuses). If your account has large amounts of small deposits, the size of your transaction will be bigger as it will consist of many inputs. The bigger the transaction size, the higher the blockchain fee.