How do I make a space between paragraphs of I can’t use the return key

Set line and paragraph spacing in Pages on Mac - Apple Support

1. Click to place the insertion point in the paragraph you want to adjust, or drag to select multiple paragraphs.
2. In the Format  sidebar, click the Style button near the top.
3. Click the disclosure arrow next to Spacing, then click the arrows for Before Paragraph and After Paragraph.

You can try using the arrow keys.