That's a beautiful, organically-shaped side table! Creating this exact shape without plugins in SketchUp can be quite challenging, as the rounded, non-linear form is best achieved with subdivision surface modeling tools (plugins).
However, you can achieve a simplified, similar look using basic SketchUp tools like the Follow Me tool, Solid Tools (if you have SketchUp Pro/Shop), and the Scale tool for the organic curves.
Here is a simple, non-plugin approach to get a similar, albeit less perfectly smooth, shape:
📐 SketchUp Basic Modeling Steps (No Plugin)