Could I download apps for iPhone 7 outside from iTunes because I haven't paid my Hulu and my account is blocked for a bit?

Could I download apps for iPhone 7 outside from iTunes because I haven't paid my Hulu and my account is blocked for a bit?

You can if your phone is jail broken. If it isn't jail broken, no third party apps can be downloaded.

Any advice how to jail break it while being literally a novice? I use to have android and things where easier

You can side load apps but you need the following:
A Mac
XCode 7
An Apple ID
iOS device

You must have all 4 to make this work, no exceptions.

You can't jailbreak an iPhone 7. While you could setup a development account it would probably just be easier to just setup new a new iTunes account with a different e-mail.