You can legally use that image for personal use.
(For your personal desktop use ONLY!)

Tools: PS CC 2020/Adobe Dimension
Time: Photoshop 1hr

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Everything is painted, rendered or my own resources.
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Original Resolution - 4K (240 DPI)

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Copyright © by Shark90art. All rights reserved.
My artwork may not be reproduced, copied, edited, published or uploaded in any
way without my written permission.

https://www.deviantart.com/shark90art/art/Rare-castle-862722614