You can use the Move SharePoint Folder from Library action to move a folder to nested structure of folder.
This action is in "Plumsail SP" connector, which is a part of Plumsail Actions product.
Note, it is a paid third-party solution. But it provides a rich set of actions that simplify working with SharePoint, permissions, and documents.
Microsoft should acquire Plumsail. Plumsail has many useful functions that MS Flow users would like to have part of the standard product. I would like the entire SP Connector incorporated.