I accidentally deleted everything off of cydia and nothing works?

I accidentally deleted everything off of cydia and accidentally press on OK. Now my iPhone 6 starts up but with only my lock screen and when i slide i can put in my pass code and use my finger ID but when i unlock my phone it has nothing there, no apps or anything. When i try to use siri it opens it lasts barely a second and it closes… Help!

Added (1). I accidentally deleted everything off of cydia and nothing works.

You could just restore the whole phone, it'll take off the jailbreak