I gave the truth but yet I lost a civil suit?

You told your side of the story, they told their side of the story. The truth is somewhere in between. It just happens that their story was more convincing, so the magistrate saw the truth more toward their side than yours. And yes, perjury is a crime, but it has to be proven. It doesn't sound as if you were very convincing or had any evidence to offer as proof.

Next time, I suggest you better prepare yourself.

"God doesn't sleep, karma will come back around"

Oh really? I guess all of those starving babies in Africa must have been real jerks when they were first born.

As far as your question goes, can you PROVE they're lying? Can you PROVE that your claims are true? Obviously not. If it's your word against theirs, which seems to be the case, the magistrate can believe one and not the other. It sounds like they have a more credible story.

It happens. Did you have a lawyer? If you didn't, and it was your word against theirs, then they were good liars. Sometimes, the judge has to decide who is more believable. Since your English has a lot to be desired, that might have clinched it for you, or against you in this case. If you cannot communicate properly and the other people can, who do you think is going to sound more credible?

I'm sorry, I know how much that sucks. You may be able to appeal but then it could cost you more.

Just take it as a lesson learned. I'm really sorry man, yes they will get there's back