In Google Chrome, you can save as many bookmarks as you want. But when it comes to delete those bookmarks, this is a long practice to delete them one-by-one. You can delete all bookmarks together in Google Chrome.
Open Google Chrome. Click on 3-dots on upper-right corner of page. Go to Bookmarks -> Bookmark manager
Select any bookmark and press CTRL+A
Click on “Delete” on upper-right corner of the page
Or right-click anywhere and select “Delete”
You have deleted all bookmarks together