Facebook Carousel post with like button

I'm seeing this for quite some time. Meme pages and viral videos using carousel post with like button.

There's no option to do this in Facebook ads manager and

my friend gave me a hint that this is called post power editor.

I saw a video on youtube but I don't see anything that's for sale.

If you know someone or a site that offers this service I'm glad to pick it up and buy a subscription.

Your suggestions are highly appreciated.

im also curious on this method