Filter users after the role

I am very beginner in Laravel.

I have this code:

    class User extends Authenticatable implements MustVerifyEmail
    {
        use Notifiable;

        public static $roles = [];


        protected $fillable = ['company_id', 'enable', 'name', 'surname', 'email', 'email_verified_at', 'password', 'counter', 'url_address',  'isCompany', 'isMailing', 'content', 'nip1', 'business1', 'phone1', 'street1', 'number1', 'postal_code1', 'city1', 'country_id1', 'provincial_id1', 'nip2', 'business2', 'phone2', 'street2', 'number2', 'postal_code2', 'city2', 'country_id2', 'provincial_id2', 'nip3', 'business3', 'phone3', 'street3', 'number3', 'postal_code3', 'city3', 'country_id3', 'provincial_id3', 'cash', 'lng', 'lat', 'enable_map', 'remember_token', 'created_at', 'updated_at', 'last_login_at', 'last_login_ip' ];


        protected $hidden = [
            'password', 'remember_token',
        ];


        public function roles()
        {
            return $this->belongsToMany('App\Role');
        }

        public function mainRole()
        {
            return $this->hasOne('App\Role');
        }




        public function hasRole(array $roles)
        {

            foreach($roles as $role)
            {

                if(isset(self::$roles[$role]))
                {
                    if(self::$roles[$role])  return true;

                }
                else
                {
                    self::$roles[$role] = $this->roles()->where('name', $role)->exists();
                    if(self::$roles[$role]) return true;
                }

            }
            return false;
        }

    }
Schema::create('users', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->bigInteger('company_id')->unsigned();
            $table->foreign('company_id')->references('id')->on('companies')->onDelete('cascade');
            $table->boolean('enable')->default(0);
            $table->string('name', 120)->nullable();
            $table->string('surname', 120)->nullable();
            $table->string('email', 120)->unique();
            $table->timestamp('email_verified_at')->nullable();
            $table->string('password');
            $table->bigInteger('counter')->default(0);
            $table->string('url_address', 160);
            $table->boolean('isCompany')->default(0);
            $table->boolean('isMailing')->default(0);
            $table->text('content')->nullable();
            $table->string('nip1', 12)->nullable();
            $table->string('business1', 120)->nullable();
            $table->string('phone1', 60)->nullable();
            $table->string('street1', 150)->nullable();
            $table->string('number1', 8)->nullable();
            $table->string('postal_code1', 12)->nullable();
            $table->string('city1', 100)->nullable();
            $table->bigInteger('country_id1')->default(0);
            $table->bigInteger('provincial_id1')->default(0);
            $table->string('nip2', 12)->nullable();
            $table->string('business2', 120)->nullable();
            $table->string('phone2', 60)->nullable();
            $table->string('street2', 150)->nullable();
            $table->string('number2', 8)->nullable();
            $table->string('postal_code2', 12)->nullable();
            $table->string('city2', 100)->nullable();
            $table->bigInteger('country_id2')->default(0);
            $table->bigInteger('provincial_id2')->default(0);
            $table->string('nip3', 12)->nullable();
            $table->string('business3', 120)->nullable();
            $table->string('phone3', 60)->nullable();
            $table->string('street3', 150)->nullable();
            $table->string('number3', 8)->nullable();
            $table->string('postal_code3', 12)->nullable();
            $table->string('city3', 100)->nullable();
            $table->bigInteger('country_id3')->default(0);
            $table->bigInteger('provincial_id3')->default(0);
            $table->decimal('cash', 9, 2)->default(0);
            $table->decimal('lng', 10, 8)->default(0);
            $table->decimal('lat', 10, 8)->default(0);
            $table->boolean('enable_map')->default(0);
            $table->rememberToken();
            $table->timestamps();
            $table->engine = "InnoDB";
        });



Schema::create('roles', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('name');
            $table->engine = "InnoDB";
        });


Schema::create('role_user', function (Blueprint $table) {
            $table->bigInteger('user_id')->unsigned();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->bigInteger('role_id')->unsigned();
            $table->foreign('role_id')->references('id')->on('roles')->onDelete('cascade');
            $table->engine = "InnoDB";
        });

and seed:

public function run()
    {
        DB::table('roles')->insert([
            'name' => 'admin'
        ]);
        DB::table('roles')->insert([
            'name' => 'adminCompany'
        ]);


        DB::table('roles')->insert([
            'name' => 'receptionist'
        ]);

        DB::table('roles')->insert([
            'name' => 'user'
        ]);

    }

I would like to display a list of users who have the ADMIN role.

I have this code:

public function showAdminList(string $query, string $sortColumn, string $sortMethod) {

return User::where('email', 'LIKE', '%' . $query . '%')->orWhere('id', 'LIKE', '%' . $query . '%')->orWhere('name', 'LIKE', '%' . $query . '%')->orWhere('surname', 'LIKE', '%' . $query . '%')->orderBy($sortColumn, $sortMethod)->paginate(25);

}

The above code shows me all the users I have in the database. How can I display only those users who have the ADMIN role?

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