My Fitness Pal guidance needed please

Hi guys,

I’m using my fitness pal and admittedly love taking a pic of a bar code where I can for better/accurate tracking

Can anyone advise how do you go about using the app for things such as

Butter on toast
A drop of ketchup
A bit of lemon juice

Basically if I leave the ML as default the supposed calories shoot up but I’m having considerably less than what MFP is saying I’m having.

Any ideas?

Thanks guys