movies/app/Livewire/MoviePage/Similar.php

<?php

namespace App\Livewire\MoviePage;

use App\Models\Movie;
use App\Models\MovieSimilar;
use Livewire\Component;

class Similar extends Component
{
    public $movie;
    public $similarMovies;

    public function render()
    {
        return view('livewire.movie-page.similar');
    }

    public function mount()
    {
        $this->similarMovies = Movie::whereIn(
            'id',
            MovieSimilar::where('movie_id', $this->movie->id)->pluck('similar_movie_id')
        )->get();
    }
}