Are pictures deleted from the gallery deleted from the cloud?

If I delete photos from my gallery that have already been uploaded to Microsoft One Drive, will they also be deleted in the cloud or do I have to delete them again in the cloud?

The other way around: Are pictures or other files deleted in my cloud in my gallery or from my internal memory on the smartphone (or laptop) or do I have to delete them individually here in the gallery?

If it is important: -I have a Samsung Galaxy S9

No, internal storage and cloud are completely independent of each other. That's the only reason why a cloud is also suitable as a backup medium…

All right, thank you very much for your helpful answer.