Hi

Thank you for your question about the Firefox Sync service.

It appears from your question, that you are using Firefox Sync as a back up service. This is not what Sync is designed to do. The Firefox Sync service takes a copy of the data you wish to include and transfers it to a second device (typically a mobile device such as a tablet or a telephone) running a copy of Firefox. The storage in between all attached devices is both temporary and fragile and is not stable enough to be (and is not designed as) a reliable backup service.

If you have a copy of your Firefox profile for desktop Firefox, you may be able to recover your bookmarks and other data. Please have a read of this article.

If you have a copy of your data on a mobile version of Firefox, please follow these instructions to connect it to Firefox Sync to copy your data.

I told you my phone crashed the screen was unusable I couldn't see anyting so I don't have a backup copy pay attention to what I was saying

If you do not have a copy of your bookmarks in another copy of Firefox on another device, it will not be possible to restore them.

You don't understand I have got my bookmark previously off of the cloud when my last phone took a dump. So why didn't it do it this time it should do it every time

If you did, it was purely good chance - Firefox Sync is not designed to be online storage for bookmarks and other data (such as user credentials).