I borrowed these tips from MediaVine because their ad insertion system works similarly to Auto Ads where they play to Google’s 30% ads, 70% content limit.
1) Bigger font sizes. 20px minimum.
2) Shorten paragraphs. Paragraphs should be no more than 2-3 sentences.
3) Add relevant images. The more the better. Separate them from paragraphs with p tags.
4) don’t add your own Adsense units except maybe one link unit because Auto Ads works around them. Exception is if you have a super high CTR unit you don’t want to lose.
5) Lengthen your short articles if you can.
You’ll see more ads yet also have a better user experience using all of these tips.