I would like to remove our projects from the search bar results in WordPress. I have come across the following snippet to do so, however, this method is by listing all the post IDs. Is there a way to exclude all /projects/ at once?

i am having issues in a website’s search bar text, when someone open the search bar and enter any text to search, it did not shows up as the color of the text is also white, however upon entering search button, it executes the search.
how can i change the color of text to black? the website is on wordpress cms. here is the website i want to fix: website

Need to make search by post_type = ‘specialist’ OR post_parent = ‘49888’