Right click on your bookmark. Scroll down to "manage bookmarks". Select "Views" tab. Under "Sort" tab select your option.

I don't see anything that says, "your bookmark". If I choose the the three horizontal lines I open the the list of bookmarks. When doing this, there is no choice to "manage bookmarks and I don't see any "views" or "Sort" options.

https://support.mozilla.org/en-US/kb/sort-bookmarks-quickly-find-ones-you-want?redirectslug=Sorting+bookmarks&redirectlocale=en-US

I do not see this "Library" as an option to work with.

I do not see this "Library" as an option to work with.

Click the menu button ≡ to open the menu panel. Click Bookmarks and then click the Manage bookmarks bar at the bottom.