Comment by MrDresden

Realise that most people have these experiences at some point in their career. You don't need to explain the frustrations you had to your future employer or coworkers.

Focus on the accomplishments, how you navigated tough situations, how you helped make things better.

Cut all the 'extreme' truth about the reality of the situation out. There is no benefit in over sharing how you felt about this, that or the other thing while working there.