For this kind of image, there usually isn’t a one-click solution. On a busy background with weak subject separation, automatic selection tools often get you only part of the way.

A practical workflow is:

1. Start with a foreground/subject selection tool to get a rough selection.
2. Convert that to a layer mask.
3. Manually refine the mask, especially around hair, edges, and overlapping details.

The key point is that complex backgrounds often require hand cleanup after the initial selection. Fine detail like hair is especially difficult, so expect to spend time refining.

If you haven’t shot the image yet and know you’ll need a cutout, the best solution is to plan for it during capture: use a simple, plain background with strong contrast from the subjects. That makes later selection much easier and more accurate.