You should be able to turn off “web search” too if you go to the page mentioned in the parent comment.

(Note the Edit icon in the corner of the homepage does not give you all the options. It used to let you turn off sponsored content, but Mozilla removed that a couple versions ago.)

Mozilla’s #1 sponsor is Google, which is why you’ll see two Google logos on a fresh install of FF (after you click through their initial setup screens)

Based on your other comments here, you should probably start organizing your tabs before your browser simply crashes.