Hi there, Thanks for reaching out! Deleting your images from Lightroom Web (Lightroom.adobe.com) will not delete your original images that you've stored locally on a hard drive. However, as you've mentioned that you've synced those images into Lightroom Classic. (Lightroom Classic download images as part of a collection from Lightroom Web), those collections will get removed from Lightroom Classic. To remedy this issue you can remove images from Lightroom Web, then turn off the sync in Lightroom Classic and import those images directly into Lightroom Classic and don't let them sync to the cloud (Lightroom Web) if you do not require cloud anymore. If you've switched form one plan to the other, then you will have the cloud storage that comes with your current plan. If you have a 20 GB Photography Plan, then you will have 20GB of cloud storage to work with.
Hope this helps.
Regards, Sahil
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