Best approach to multi language sites

You can have a look at Laravel Lang, which is nice and easy to setup and work with, and eventually check at the official Laravel documentation about localization.

amirami/localizator is also a good package, but you need to code the logic (middleware, etc.) by yourself.

This is my multilingual blog with categories and tags

php artisan make:model Post -m
php artisan make:model Category -m
php artisan make:model Tag -m
php artisan make:model Language -m
php artisan make:model PostTranslation -m
php artisan make:model CategoryTranslation -m
php artisan make:model TagTranslation -m

posts table:

Schema::create('posts', function (Blueprint $table) {
    $table->id();
    $table->string('picture')->nullable();
    $table->date('date');
    $table->timestamps();
});

categories table:

Schema::create('categories', function (Blueprint $table) {
    $table->id();
    $table->timestamps();
});

tags table:

Schema::create('tags', function (Blueprint $table) {
    $table->id();
    $table->timestamps();
});

languages table:

Schema::create('languages', function (Blueprint $table) {
    $table->id();
    $table->string('code');
    $table->string('name');
    $table->timestamps();
});

post_translations table:

Schema::create('post_translations', function (Blueprint $table) {
    $table->id();
    $table->foreignId('post_id')->constrained()->onDelete('cascade');
    $table->foreignId('language_id')->constrained()->onDelete('cascade');
    $table->string('title');
    $table->text('short_text');
    $table->text('long_text');
    $table->timestamps();
});

category_translations table:

Schema::create('category_translations', function (Blueprint $table) {
    $table->id();
    $table->foreignId('category_id')->constrained()->onDelete('cascade');
    $table->foreignId('language_id')->constrained()->onDelete('cascade');
    $table->string('name');
    $table->timestamps();
});

tag_translations table:

Schema::create('tag_translations', function (Blueprint $table) {
    $table->id();
    $table->foreignId('tag_id')->constrained()->onDelete('cascade');
    $table->foreignId('language_id')->constrained()->onDelete('cascade');
    $table->string('name');
    $table->timestamps();
});

if you like this approach i can send full code, categories and tags are like filter...