How can I fix my iPhone 5s camera?

Iv had this phone for two years already. I don't have money right now to buy a new phone, so I have to keep this one for now. The back camera won't focus. Iv already tried everything, turning it on and off, resetting it, pressing the home and off button a few times. What should I do?

You have to pray

Take it to an Apple store or a 3rd party repairer, but if money is an issue either deal with the issue until you have enough money or watch a youtube tutorial on how to fix it.