Bookmarks Imported from Chrome not visible anywhere in Firefox

No Bookmarks (which are shown as imported from Chrome, almost 163 number of Bookmarks) are visible anywhere in Firefox. They are neither stored in the Bookmarks Tool Bar nor in any folder named Imported from Chrome. This is the situation. Uninstalled Firefox, removed all Folders (including the ones in hidden folders) and cleaned the Registry. Restarted the PC, reinstalled Firefox directly from the firefox site online, tried importing the Bookmarks from Chrome after restarting on installation of Firefox. Saved All passwords from Chrome as a CSV file (a Firefox requirement) and tried importing Bookmarks from Chrome along with the Passwords from the CSV file saved on Desktop. Again, the importing showed 163 Nos. of Bookmarks are imported. But on restarting Firefox, no bookmark could be found. Neither in the Bookmarks toolbar nor in any folder named with any name. My Bookmarks toolbar is checked as Always visible. I DO NOT KNOW WHAT TO DO NOW TO MAKE THE FIREFOX WORK as in the previous version. This kind of an error has crept only after updating Firefox to v150.0.1.