The answer to 'how to unclog faucet' is to first try removing the faucet aerator or screen, which can often be the source of a clog. If that doesn't work, you can disassemble the faucet and use a wire or plumber's tool to remove any debris or buildup inside the faucet mechanism.
If the clog is more stubborn, you may need to use a faucet puller tool to completely remove the faucet and access the interior. Be sure to turn off the water supply before attempting any disassembly. For severe clogs or if you're uncomfortable working on the faucet, it's best to call a professional plumber to diagnose and fix the issue.