can I use a Sim card from another country on my new iphone 14

Not if you bought the phone in the USA, unless the carrier in the other country supports eSIM. There is no SIM slot on phones destined to be sold in the US.

Yes, I already registered and activated it. And I also tried with other phone, and my carrier work fine.

Because in my country's law, if you don't pay the taxes (obviously) for international phone that came from other countries, the goverment will block the signal through SIM cards nor eSIM. That's why just several SIM cards and eSIM can be used without those steps. But, yes, you still need to register your national ID to activate and use the SIM cards and eSIM.

Also, as I know some phone cannot use in other countries, as you said at the comment above.

For me, Yes, you can.

But with special condition. I bought my iPhone from Taiwan and savely brought to Indonesia, and now only some SIM card is accepted by the phone.

What is the message for cards that it doesn’t accept?

My iPhone just not recieve any signal. But Wi-Fi, Bluetooth, and other wireless function works great.

Do you have an account with the carrier whose SIM card you are trying to use? If you don’t get an error message when you insert the SIM that means that the SIM is not activated.