If the rendered effect image is not bright enough, you can manually add supplemental lighting. There are several commonly used supplemental lights as follows:

1. Multi-purpose light strip. Go to Cloud material – Decoration – Lighting – Fill light, select the supplemental light and drag it into the design perspective. You can toggle visibility, adjust brightness, and set the light color. This is often used to create light strip effects inside cabinets;

2. Supplemental lighting in the rendering interface. Click on the rendered effect image -- Click on advanced settings -- Drag the supplemental light into the room, then adjust the brightness, color temperature, and height of the light.