Short lines. White space. One idea per line. If a sentence needs re-reading, cut it in two.
Example
Dense: 'When I first started posting online I thought that the most important thing was frequency, but over time I realised...' Scannable: 'I thought frequency was everything. It was not. Clarity was.'
Exercise
Reformat one old post into short lines. Read it aloud.
Implementation task
Adopt a one-idea-per-line habit for a week.