Just use an alias and don't discuss your personal business.
I had my real name on there until someone from the past managed to find me and sent a request. I quickly changed my fb name and blocked them. I've also deleted the profile pics.
Now I just circulate positive and pro black memes and pictures. Only people who know shyt about me are those who know me offline anyway. No future employers, exes, fake ass former friends or anyone else can search me.
FB has its uses, but overall it's starting to get played out. I cant stand the fakery, narcissistic bytches, attention seekers, over the top simps and popularity contests on there.