Brands should be required to give specific reasons for declines. For example, when a creator has matched everything in the brief yet the decline reason is “we’ve decided to approve submissions that more closely match the brief”. All this says to me is that they either want to work with lower paid creators (in which case, negotiate) or they have specific creators in mind (in which case state this in your brief OR only contact those creators). The absolute worst is “you’ve just missed out this time” as this is a dreadful decline reason.