what if i don’t have a computer?

By fix, are you referring to a disabled device? If so, see the following from If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

You need a computer to follow these steps. If you don't have a computer, borrow one from a friend, or go to an Apple Retail Store or Apple Authorized Service Provider.

To fix what?

Anyway, for most things you can borrow one, or go to an Apple Store and ask to use on of the floor models there.

Does a friend or family member have a computer? You can always get help at an Apple Store.