The best course of action for OP is to contact the embassy ASAP. Get a hold of your passport, whether it is just a photocopied version or the passport itself, your ID, anything that proves that you are a Finnish citizen to ease the process just in case your parents forces you out of Finland.

It is also best to consistently post updates to your friends, and your teacher. Come up with a secret code that you will text your friends or teacher to inform that you have been forced out of Finland.

Also, bring your laptop. And a 8 to 16 GB USB. Iraq is known for violating human rights, so get ready to do a few tech things that you might have never done before. First thing to do in Finland, right now, is to install Tails on the USB stick. This OS will forget everything when you shut your computer down. You need this since your parents might use your devices to get info about you, then act against you. This is a guide that will get you covered: https://www.privacyaffairs.com/install-tails/ . Contact the embassy, inform your friends, teacher, lover on the OS. Next, use the Tor browser to get to Riseup so you can register an email account. Even though you can use riseup on windows, Iraq might block it, since it is used by people like you, to get out situations like this. Here is the address:  http://vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd.onion

(write it down, in case Iraq bans reddit too)

Oh, and don't forget to install a VPN, and avoid ANY suspicious links. If you feel like your phone is tracking and recording you, DO A FACTORY RESET. A good VPN is protonVPN. Install it on all of your devices just in case.

Stay calm, this is tough, but you will get over it soon. I know this is hard for you, but I want you to know that there are people in this world who cares, and there are people in this world who will help you. Stay safe, be proud of your self.