Search engine has stopped working on my browser

My search engine has stopped working. I just get blank pages when I enter any subject in the search bar. I am forced to open a private window which always works without issues. Closely related to this problem I believe, is the fact that any online forms I try to complete and submit will not submit. Again if I copy and paste the address into a private window, I can complete and submit without any issues. It is getting very frustrating to keep having to go private windows. When I open a new tab, it opens fine, I get all the articles as per normal. But when I enter my search criteria I get nothing (see attached screenshots)