What Nir Shelter said. And the main character is not exactly a sympathetic guy-- he represents the bad guys. That's not necessarily an immediate concept killer but it is a potential one. The character would need to be so compelling, so interesting that the audience will want to watch his "bobbing and weaving" in spite of his clientele.
It's better to frame the story with a specific case, a specific legal battle.
And what's at stake? So he loses in court. What is lost for the main character. It's the bad guys who go to prison -- not the lawyer. And he will collects his fat fees anyway, right? So what's his jeopardy? What is there for the audience to worry about? What does he stand to lose if his clients lose in court?