Only if the courts decide that it was unlawful, but companies have enough experience and lawyers who make sure they have enough dirt on you to justify them firing you. It's what my German ex-boss told us and I've had seen many colleagues get fired without any repercussions for the company. Plus, if you end up sueing your former employer, and the word gets out, no other employer will touch you.

Also, for your mental health, you wouldn't want to go back and work at the company who just fired you. That's like getting back together with an ex you just got out of toxic relationship.