Facebook's security prevents external tools from bypassing these privacy locks, so any tool claiming to do so is likely fraudulent. to better control what others see?
People lock their profiles for serious reasons:
If a profile is locked, Facebook’s servers are instructed not to serve that content to your browser. There is no magic "back door" to force the server to give you the data.
Viewing a "locked" Facebook profile is through any legitimate hack or third-party tool , as the feature is a core privacy guard designed to restrict profile access to a user’s approved friends list only. The Reality of Facebook’s Profile Lock
When a profile is locked:
Viewing a locked Facebook profile is designed to be highly restrictive for anyone not on the person's friend list