My bathroom sink has recently started having a weak flow. I am trying to clean the aerator to see if this helps since soaking the end of the faucet didn't work. It doesn't look like the end of the faucet is able to be unscrewed and when trying to unscrew it, it won't budge. I am curious if every faucet is able to be unscrewed? I will attach a photo of the faucet for reference.