I can't cancel my subscription

If the information @Manan Joshi provided doesn't help, you can also try calling. This page provides regionally appropriate phone numbers:

https://helpx.adobe.com/contact/phone.html

Be aware that because of the pandemic, wait times are far longer than usual due to reduced staff and higher demand. Please be patient with the people to whom you speak. Like you, they are feeling a great deal of stress. A little patience and understanding will go a long way to helping you in your particular situation.

Hello @Emrah5FB0 ,
Look at the following link for information on how to cancel your subscription.
https://helpx.adobe.com/manage-account/using/cancel-subscription.html
If the information does not help, then you need to contact support.
Login to your account and navigate to the URL below. Make sure that the browser has cookies enabled, and all script blockers are disabled.
https://helpx.adobe.com/contact.html
Click on the chat icon on the bottom right, and type AGENT to avoid bots and talk to a human.
Also, be mindful of answering anyone who sends you a private message. See the following for more information about scammers
https://tinyurl.com/y7cfrr7y

You can also try to connect to Adobe via Twitter or Facebook, some people reported getting better response times using these methods.
-Manan