Get a lawyer and report to the police or crime investigation team in your country. If you follow such a process, there is still a chance that you may not get the lost funds back.
So an attorney would have the knowledge and skill to trace that transaction and be able to get the name and address of the scammer?
Tracing the coin is the work of chain analytic companies. You can try and trace it yourself to a centralized exchange with a tool. But if the person do not send it to a centralized exchange, consider the money gone, especially if it is a low amount of money that you will spend more much than if investigating the scammer.
Even if I did pay a chain analytic company to trace the coin and then hire a lawyer to sue, I still might not win the case. The scammer could claim that I gave him/her the seed phrase.
And even if I did win the case, I still would have to collect the money. Just because a person wins a lawsuit doesn't mean the other person will readily hand over the money.
In the above scene, there are a lot of "IF's."
And I'm sure doing this would cost a small fortune.