[Resolved] Adding Elements (related posts, headline,…)

Hello,

I created Related Posts by GenerateBlocks.
Below these posts are there a navigation.
(1) But the PageSpeed Insights said that these links are not crawlable.
https://ibb.co/BC9z45s
https://ibb.co/9VnPmp8
Can we solve this?
(2) Another question is: is it possible to make these related posts like a slide shows?
I mean that when I click on the number or the next button of the navigation, it does not need to reload the whole page, but only the related posts area and keep me there, not go back to the top of the page.
(Maybe it is impossible! (笑))
(3) And another question concerning Headline element.
Please have a look at my site Inoruhana
I created a Headline like this: Under Maintenance…
But its performance looked so ugly: too closed to the Menu Navigation and the bottom so wide.
I used additional css to make it a little bit better.
My css is .wp-container-3{
margin-top: 1.5em; margin-bottom: -1em;
}
(4) the final question: Perhaps because I created these elements, wp-block (social link) at the footer area was broken.
I added social icons there but they arranged in vertical row even in the setting was horizonal.
Eventually, I add the following css and they became horizonal row.
.wp-block-social-links{
display: flex;
}
However, it showed a slightly bad looking.
The social icons and site-info did not lye on the same line.
So, I added more css: .inside-site-info{
align-items: normal;
}
Here, I really do not want to add more additional css.
So, if you have any better solution (of course, you have), please give me some advices.

Best regards,
Inoruhana