Core JavaScript is not included in all pages
Drupal 8 adds little to no javascript by default, and thankfully doesn't force jQuery on us any more :) 

You need to declare your dependencies explicitly:

default:
 version: 1.x
 css:
  theme:
   css/bootstrap.css: {}
   css/style.css: {}
   css/font-awesome.min.css: {}
   css/animate.min.css: {}
 js:
    js/galip.js: {}
 dependencies:
    - core/jquery
    - core/jquery.once
    - etc...