Hide Content Type Default Pages from Search Results
You can use Custom Search module.


  This module alters the default search box in many ways. If you need to
  have options available like in advanced search, but directly in the
  search box, this module is for you. D8.x notes
  
  The module adds options to select:

which content type(s) to search,
which specific module search to use (node, help, user or any module that implements search),
which input type to use (with Elements),
advanced criteria

  
  For all these choices, there are options to switch between a select
  box, checkboxes or radio buttons, and also customize the selector
  label and the default - Any - text. Advanced options
  
  There are also options to:

change the default search box label,
add a default text in the search box,
add advanced search criteria,
change the default submit button text,
use an image instead of the submit button,
change the order of all the elements,
include some elements in a popup block,
add a filter to the results page,
show/hide basic and/or advanced search in the results page,
show/hide meta data in the results page,
multiple search paths