Заходишь в лайтрум, не в правом, а в левом, верхнем углу нажимаешь "мои правки" у тебя появляется "отредактированые, не отредакитрованые и т.д" и удаляешь все, в том числе и из корзины
I noticed from your screen image that your cloud sync is paused. What happens if you resume sync? Do you then see the images that reflect the account storage used?
Checking your account against the system, I see almost ~39GB of cloud storage used. Resuming sync will probably show you the images you don't currently see. And from that point you can decide what you want to keep or remove from your account.
If your locally stored copies take 55GB like the screenshot shows, then there is no way that you would only have 10 photos in Lightroom! Most likely you are looking at an album that contains only 10 photos, rather than at all photos. Remember that photos do not necessarily have to be in an album! If you only have one album and that one album contains only 10 photos, then you could still have hundreds or even thousands of photos in Lightroom. Could it be that they are all in the trash, but the trash has not been emptied?