To solve this problem, please consider the possibilities:
1) Does the faucet outlet filter block the impurities and affect its effluent? Remove the filter for cleaning.
2) Is there any damage to the faucet spool or is the seal gasket worn? Hard replacement of the valve plug or sealing gasket.
3) Does the faucet spool have impurities that affect its sealing performance? Take out the valve plug for cleaning.