Modifying plugin to be displayed on the homepage

It’s my second day looking at this problem, I guess there is an obvious answer for this, but I guess I couldn’t find it.

Here it goes,
I have a plugin that displays a floating bar with social media icons on it, currently it’s displayed only on posts by injecting some codes into the body using the following:

<?php

function adding_Floatbar($content) {
	$barContent = add_Floatbar();
if(!is_home()) {
	$content = $barContent . $content;
	return $content;
}
else { return $content; }
}

/*
*  Adding the floatiung bar to the page, by attaching it to the_content filter
*/
add_filter('the_content', 'adding_Floatbar');

/*
* Generating the floting bar, and it's content depending on the selected options.
*/

function add_Floatbar() {
if (is_single()) {
// Other conditions and Injected HTML
}
?>

I tired to remove the condition at adding_Floatbar(), and modifying add_Floatbar() to

function add_Floatbar() {
if (is_single() || is_home()) {
// Other conditions and Injected HTML
}

But it made it display several times, depending on the number of posts displayed on it.

So, is there is a way to display it only once?
And sorry in advance if it was posted before.