Configuring a page to show image

Hi,
You must add “Featured Image” on from the right.

thank you so much! Managed to get it to display now but I have another problem.
If i click into the post, the image displayed is MASSIVE. is this an original file image size problem?

https://skinnoob.com/2020/12/21/elta-md-uv-clear-broad-spectrum-spf-46-tinted/

The featured image in the post detail is shown in the largest possible size.

If this is a problem for you, I’ll suggest a two-step solution.

1- Hiding the featured image in the post detail with css: To do this;
Add the following code to the box at Appearance > Customize > Additional CSS:

.single article.post .img-frame { 
  display: none; 
}

When you do this and save, the featured image before the title in the article detail will be hidden, but the featured image will continue to appear on the main page.
This code will have the same effect on all your post.
If you only want to do this in a certain post type; (For example, for Standard post type) you should add the css code as follows:

.single article.format-standard .img-frame { 
  display: none; 
}

2- Add the small version of the same picture to the top of your article from the editor.

Thank you so much! I have more or less got it close to what I want.
I have another question at this point.

Right now on theskinnoob.com I have a “Products” Menu that takes me to a page where i have all my review posts.
How do I add another item such as “Articles” to the menu so that I can have non product review posts appear on that segment?

I tried to add it from Appearance > Menu but it comes out as a Page instead and not a “Posts page”

Create a category named Articles and add this category to the menu.
Then add your review articles to this category.

Thank you Tamer!! Really appreciate all the help

You’re welcome.