Adding category slug to url

Hi,

I have a blog. Currently I am displaying posts like this:

Route::get('post/{slug}', [BlogController::class, 'post'])->name('frontend.post');

In my controller I'm getting the slug like this

public function post($slug)
    {

        $post = BlogPost::with('author', 'category')->where('slug', $slug)->first();

    }

I want to change this to display the category slug instead of "post". So I added a new query to my post method:

$category = DB::table('blog_post_categories')->where('slug', $catSlug)->first();

and changed my route like this:

Route::get('{catSlug}/{slug}', [BlogController::class, 'post'])->name('frontend.post');

Theoretically this works and I can access my posts directly, but in my post view I'm displaying other stuff like related posts, popular posts and latest posts and I'm getting the error

Missing required parameter for [Route: frontend.post] [URI: {catSlug}/{slug}] [Missing parameter: slug].

because of how they are linked, for example:

<a href="{{route('frontend.post', $relatedPost->slug)}}">{{ $relatedPost->title }}</a>

<a href="{{route('frontend.post', $latestPost->slug)}}">{{ $latestPost->title }}</a>

<a href="{{route('frontend.post', $popularPost->slug)}}">{{ $popularPost->title }}</a> 

I'm getting these in my controller like this:

$relatedPosts = DB::table('blog_posts')->where('blog_post_category_id', '=', $post->blog_post_category_id)->where('id', '!=', $post->id)->inRandomOrder()->limit(3)->get();

$popularPosts = DB::table('blog_posts')->orderBy('viewed', 'DESC')->limit(4)->get();

$latestPosts = DB::table('blog_posts')->orderBy('id', 'DESC')->limit(4)->get();

This is my blog_post_categories table

$table->string('name', 191)->unique();
$table->string('slug', 191)->unique();

and this is my blog_posts table

$table->string('title', 191)->unique();
$table->string('slug', 191);
$table->unsignedBigInteger('user_id');
$table->mediumText('content');
$table->string('meta_title', 191);
$table->string('meta_description', 191);
$table->boolean('is_featured');
$table->unsignedBigInteger('blog_post_category_id');
$table->string('featured_img')->nullable();

So i'm guessing I need to change the way I'm accessing the related, popular and latest posts and I also need to adjust routes in the "a href"s as well. But i can't figure it out how. Any help is appreciated.