Possible choices in backup ingredients

Hi Ehtasham,
I understand that you would like to only back up certain items that are on your iPhone. Let's go over your options on how to do that.
I you are using iCloud to back up your iPhone, you can back up just those items. Go to Settings > iCloud > Storage > Manage Storage and then click on your iPhone, you will see the options for items that are backed up. Just turn off the ones you don't want and you are good to go. Take a look at the first two articles to go over managing your iCloud storage and how to back up to shed some light on this question.
Manage your iCloud storage
https://support.apple.com/en-us/HT204247
How to back up your devices using iCloud or iTunes
https://support.apple.com/en-us/HT203977​
Now if you use iTunes, you won't have those options as it will back up your iPhone as a whole minus a few details that are explained in the next article.
About backups in iCloud and iTunes
https://support.apple.com/en-us/HT204136​
Let me know if you need more information.
Take care

Hey Ehtasham,
It was not problem with the assist and glad that I could clear that up for you.
Take it easy