Can't size large image down to fit canvas

[bradcdavis]

Please see video of screen showing the issue (attached .zip). Basically, Large images will not size down correctly in GIMP. I'm using 2.10.36. I can't find anything online that explains how to control resizing images in GIMP like you can in Photoshop. Any tips would be great.
  Cant Size Large Down-1.zip (Size: 874.05 KB / Downloads: 92)

[Ofnuts]

Solution 1: Make the canvas big enough to fit your imported image (Image > Fit canvas to layers), then scale the layer, then make the canvas fit again.

Solution 2: Use Layer > Scale layer and enter the size directly.

Solution 3: If you do this often, you can use my ofn-autoscale-layer script

[bradcdavis]

Thanks. I did finally figure it out. I want precise scaling control so used the Unified Transform tool and set the transform to Layer in the Tool Options. Then set the Clipping option to Show image preview and Composted preview. So now I can size the image just like Photoshop. Whew.... transferring over to GIMP from 30 years of Photoshop is quite the challenge. Thanks for your help!