I want to cancel my subscription but I don’t get the unsubscribe button on my settings as well as App Store profile. How do I do it?

First, in your settings, you'll want to be logged into your Apple ID, which will show up at the very top, right below the Settings title. If you click it, you should be given a menu of options below your name and email, like Name, Phone Numbers, Email, Password & Security, etc. The 4th option is Subscriptions, and you can tap that to access and view your active and expired subscriptions. If you have already gone to your Apple ID, but the Subscriptions option seems to have a grey shading and you can't click it, I had that issue when I had bad connection and I was trying to cancel my subscriptions, so try to get to an area with good WiFi. Hope that helps!