How to disable icloud from my iphone 5?

I have data and photos on my iphone 5 that I don't want being end up in icloud. How can I make sure that my icloud is disabled and not doing the backup?

Need urgent help please. I'm not very technical

Turn iCloud features on or off

Depending on which device's settings you want to change, do one or more of the following:

On your iOS device's Home screen, go to Settings > iCloud, then tap to turn on or off iCloud features.