Function passing values into input boxes PHP using mysqli - php

Question

Pretty much what I want to do is get ID from database and pass that ID values into input boxes so I can re-edit them when clicking on edit button
<td><a class= "waves-effect waves-light btn" href="http://localhost/robinzonlucica/public/includes/evidencija.inc.php?edit='.$row['evidencijaId'].'"><span class="fas fa-edit"></span></a></td>
This is my icon href to get Id and pass it to evidencija.inc.php
if(isset($_GET["edit"])){
$id = $_GET["edit"];
require_once $_SERVER['DOCUMENT_ROOT'].'/robinzonlucica/public/includes/dbh.inc.php';
require_once $_SERVER['DOCUMENT_ROOT'].'/robinzonlucica/public/includes/funkcije.inc.php';
izmijeniEvidenciju($conn,$id);
}
else{
header("location: http://localhost/robinzonlucica/public/evidencija.php");
exit();
}
This is my evidencija.inc.php part to get id from that row and there is izmijeniEvidenciju($conn,$id); function to edit values for given edit=id
function izmijeniEvidenciju($conn, $id) {
$sql = "SELECT * FROM evidencija WHERE evidencijaId = ?;";
$stmt = mysqli_stmt_init($conn);
if(!mysqli_stmt_prepare($stmt, $sql)){
header("location: http://localhost/robinzonlucica/public/evidencija.php?error=stmtgreska");
exit();
}
mysqli_stmt_bind_param($stmt, "s", $id);
mysqli_stmt_execute($stmt);
mysqli_stmt_close($stmt);
}
That is my function to get data I want data to show in input fields not sure where I went wrong I am very confused
if(isset($_SESSION["username"])) {
echo '<h2 class ="center-align evidencijanaslov">Evidencija</h2>
<div class="row">
<form action="http://localhost/robinzonlucica/public/includes/evidencija.inc.php" class="col s12 registerforma" method="post">
<div class="row">
<div class="input-field col s6">
<input id="ime" type="text" class="validate" name="ime">
<label for="last_name">Ime Turista</label>
</div>
</div>
<div class="row">
<div class="input-field col s6">
<input id="ime" type="text" class="validate" name="prezime" >
<label for="last_name">Prezime turista</label>
</div>
</div>
<div class="row">
<div class="input-field col s6">
<input id="ime" type="text" class="validate" name="oib">
<label for="last_name">OIB Turista</label>
</div>
</div>
<div class="row">
<div class="input-field col s6">
<input type=text name="datum" id="datum" class="datepicker">
<label for="datum">Datum odlaska</label>
</div>
</div>
<button class="btn waves-effect waves-light gumbsalji" type="submit" name="submit">Upiši</button>
</div>
</form>';
}
This is html input