SQL query to join column with multiple ids - php

Question

I need to connect a initiative table with locations one, there is a column at initiative table which ill contain multiple ids or single ids, depends on how much is added. The data will be saved like this:
"1,4,3"
public function getallRIS(){
$connect = $this->connect;
/*
THIS QUERY WORKS WITHOUT MULTIPLE IDS ON THE COLUMN
$qx = "SELECT initiatives.location_id as init_location, initiatives.name as init_name, initiatives.startyear as init_startyear, initiatives.endyear as init_endyear, ST_AsText(locations.location) as locations_coord, locations.name as locations_name
FROM locations
JOIN initiatives on initiatives.location_id = locations.id";
*/
$qx = "SELECT GROUP_CONCAT(initiatives.location_id SEPARATOR ',') as init_location, initiatives.name as init_name, initiatives.startyear as init_startyear, initiatives.endyear as init_endyear, ST_AsText(locations.location) as locations_coord, locations.name as locations_name
FROM locations
JOIN initiatives
ON FIND_IN_SET(locations.id, initiatives.location_id)
GROUP BY initiatives.location_id";
$queryx = "SELECT ST_AsText(ri_location) FROM ri;";
if($query = $connect->query($qx)){ }else{ echo $connect->error; }
$count = $query->num_rows;
$row = 1;
while($fetch = $query->fetch_array(MYSQLI_ASSOC)){
$point = $fetch['locations_coord'];
$point = str_replace(array("POINT(",")"),array("",""),$point);
$point = str_replace(" ",",",$point);
$coord = explode(",",$point);
$lat = $coord[0];
$long = $coord[1];
echo'
{
lat: '.$lat.',
lng: '.$long.',
text: "'; echo "<b style='font-size:17px;'>"; echo''.$fetch['init_name'].'</b><br>Country: '.$fetch['locations_name'].'<br>Info: '; echo"<a href=''>"; echo'View</a><br>Start Year: '.$fetch['init_startyear'].'<br>End Year: '.$fetch['init_endyear'].'"
},
';
$row++;
}
}
However is not working properly , shows only first item of each column