variable value not getting displayed on laravel blade

Question

I have following in my laravel blade file.

@slot('title') {{ $user->first_name }} {{ $user->last_name }} @endslot
        <?php if (App\Models\DepartmentUser::where('user_id',  $user->id)->exists()) {
            $jobTitleId=App\Models\DepartmentUser::where('user_id',  $user->id)->first()->job_title_id;
            if($jobTitleId){
                $jobTitle=App\JobTitle::where('id',$jobTitleId)->first()->title;
                echo '@slot'.$jobTitle.'@endslot';
            }
         }
         else{
                echo 'No job title set.';
            }
        ?>

Here, I'm trying to echo, user's job title if they are assigned to any department, and if they are not assigned to any then, No job title set text has to be shown..

But When I run this, it won't display me the job title.

I tried dd the $jobTitle it was printing the output...