Sticky posts in search

I have been trying to get sticky posts to appear as first posts when they are displayed in search. (im not a coder)
So I am looking for a way to “feature” certain posts and make them appear first in search.
I found this code so far but I have no idea how to implement it.

Code:

add_action( 'admin_init', 'createCustomFields' ,1 );
// add the custum metabox to post type
// can do the same to pages or other custom types
// can also loop throughout all types to add this snippet
function createCustomFields() {
add_meta_box( 'sticky-post', 'Sticky Post' , 'displayStickyPostsMetaBox', 'post', 'normal', 'high' );
}

// Lets make sure we save it
add_action( 'save_post', 'saveCustomFields' , 1);
function saveCustomFields()
{
global $post;
$id = $post->ID;
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) {
return $id;
}

saveCustomField("MakePostSticky");
}

// Lets display the Sticky Post Snippet
function displayStickyPostsMetaBox()
{

displayDivPrefix("Make this post sticky in Relenanssi Search Results");
displayDropBoxEx("MakePostSticky","Make Post Sticky","Yes,No","Yes,No", "No");
displayDivSuffix();

}

// Relevansi hit filter - customization of search results:
// pop up sticky posts
add_filter( 'relevanssi_hits_filter', 'my_stickyposts_hits_filter' );

function my_stickyposts_hits_filter( $data ) {

$hits = $data[0];
$regularposts = array();
$stickyposts = array();

foreach ( $hits as $key => $hit ) {

$MakePostSticky = get_post_meta( $hit->ID, "MakePostSticky", true );

if ( $MakePostSticky == "Yes" ) $stickyposts[] = $hit;
else $regularposts[] = $hit;

}

// we are placing the sticky posts on top in the same order thet appears in
// search results and the rest goes after them
$filtered_hits = array_merge($stickyposts, $regularposts);
$filtered_data = array( $filtered_hits, $data[1] );

return $filtered_data;
}

Can anyone help me implement this?
and then I would like to be able to order the sticky posts so that for example, 3 out of 8 sticky posts show up as the first 3 hits.

My website:
https://www.timbeek.com

Can anyone help me out? Any help is greatly appreciated.

https://www.ads-software.com/plugins/relevanssi/