Can I sue for defimation of character after I complete pretrial intervention?

Was publicized nationwide as a terrorist &was charged with "written threats to conduct a mass shooting". There was no evidence I was going to commit this crime, no intent to commit the crime, nor had the ability to do it. There was no victim of any kind in the case (victimless crime). I completed all mental health &anger management courses with ease. I had even came forth to the FBI in 2017 about how I heard someone was going to commit a mass shooting so I intervened &later went to the fbi to give them the suspects description &plans. As far as my charge goes, I am to complete pre trial intervention &the charge will be dropped & expunged. Unfortunately CNN &many other news outlets slandered me nation wide for this crime I was never convicted of. The local sheriff went on TV &attacted me with personal attacks &gave false information to the public regarding the case. This ruined my entire professional carrier &image for the rest of my life, though I was not convicted. It makes me sick..