Help on removing posts page from sitemap

Hello,

Is there anyway I can prevent indexation of below urls from my site?
Does Yoast has such option. It can prevent indexation of Categories. But not this posts pages.
Do below urls can cause content duplication issues on my own site?

add your urls into your robots.txt in root of your project.
i think Yoast must have settings about robots.txt

robots.txt:

You can do this by adding a robots do not follow.
<meta name=”robots” content=”noindex,nofollow”>
in the header.

You can get rank math plugins if you use wordpress which can help you do this automatically.