Thanks for reaching out. We're sorry for the trouble with managing your storage in Lightroom. We're here to help.
Could you please share the version of Lightroom & the operating system you are working on? Do you see the deleted images in the deleted folder?
Images in the deleted folder continue to count against your total storage. You can empty the 'Deleted' folder & check if your total available storage frees up. Please note that deleting images from the deleted folder is a permanent action and can not be reversed.