Hi @Gizem29, let me see if I can help out here.
I have translated your question to English as this is an International forum, please post any replies in English and it will be easier for me and other users to assist you.
Is it a wifi connection that you are unable to connect to or are you not able to use your mobile data?
For information on how to connect to a wifi, click here. If you are not able to use your mobile data, you might need to download your service providers internet settings. In order to do this, Find and tap Settings > Network & Internet > Internet settings > ACCEPT.
I hope that helped! Please return if I have misinterpreted your question in any way!
