The problem with civil suits is you have to have an end game in mind, and unless you've got an ambulance chaster interested in y our lawsuit, you're going to have to front the money to
run it. Things like USC 1983 (civil rights) suits are not simple, either, otherwise pro RKBA groups would be firing off a metric ton of them.
In the example you mentioned, things like "wrongful prosecution" are hard to hoe, because more often than not the courts suck for the garbage that the state acted in good faith, blah blah
blah, so wah lah, etc. Normally the bar to prove that the state acted maliciously is pretty high, sadly.