How do i delete old photos from my older posts? my storage is being wasted on old photos

[Grapeshot]

I tried that already and all the posts with attachments have no option to check to delete.
In about 2 dozen threads I’ve made only the latest one posted today has an option to check to delete.
The rest (closed sales threads) have no option to delete. Half my storage space are sales threads with
Pictures I can’t delete.

You don't perform the delete from within the sales threads, the option is from your profile page. ('My Profile' - top of screen)
Are you saying you can't delete from there?