I-Firefox Isithangami Sokwesekwa

Can I remove the white bar that appears as shown? Sorry, but I have used Firefox for so long that I forget all the weird customisations I may have made in the past!

I refreshed firefox because it was running slow and it was recommended. After refreshing firefox , I am missing my toolbar at the top of my screen. I want it back. It contained bookmarks, history, etc. How do I get it back?

When I right click on the top bar of Chrome or any other window, I get a menu with items: Minimize, Maximize, Move, Resize, Always on top, Always on visible workspace, Move to monitor left, Close.

When I right click on the top bar of Firefox, I get a menu with items: Pin to overflow menu (grayed out), Remove from toolbar (greyed out), Menu bar, Bookmarks toolbar, Customize...

How do I get the system menu to appear also on Firefox, instead of this Firefox menu nonsense?

how to change "new tab/home page" background to an image/picture that I want? This should be a given - don't understand why Mozilla hasn't done this yet-after all this time.

I cannot view slideshows of various subjects on my home page. I used to be able to view them but can't now. What has happened that has caused me not to be able to see them.

my firefox browser bar has dissapeared-not the address bar-dont understand why it sits just above my apps,but i cant get it back

any suggestions

thanks

brian