Where do I place the shortcode?

I have a video game site to play online. I use your plugin to show posts by category.

Two doubts arose;
– I’ll put at least 300 words. It’s good for SEO. But to find the posts, you will have to scroll very low. Or, I put the shortcode at the top and the text at the bottom. However, those arriving from the SERP will not find the text because it is at the bottom and will exit. I’d opt for text above and shortcode below, but I’m not convinced.
– When I have more than ten videogames per category, what will happen? Will I have duplicate content issues because it will copy my text? Will I have the following pages without the text but with the shortcode? I’m thinking about SEO optimization.

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