Chat database and model setup

Hi all,

I have a little hard time finding out how to structure my Chat database and models, which i hope someone can look at and give some feedback on ✋

So first my migrations are

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

Schema::create('chat_participants', function (Blueprint $table) {
    $table->id();
    $table->unsignedBigInteger('conversation_id');
    $table->morphs('sender');
    $table->timestamps();

    $table->foreign('conversation_id')->references('id')->on('chat_conversations');
});

Schema::create('chat_messages', function (Blueprint $table) {
    $table->id();
    $table->string('message');
    $table->unsignedBigInteger('conversation_id');
    $table->unsignedBigInteger('participant_id');
    $table->string('type');
    $table->timestamps();

    $table->foreign('conversation_id')->references('id')->on('chat_conversations');
    $table->foreign('participant_id')->references('id')->on('chat_participants');
}); 

Schema::create('chat_notifications', function (Blueprint $table) {
    $table->id();
    $table->unsignedBigInteger('chat_message_id');
    $table->morphs('sender');
    $table->unsignedBigInteger('conversation_id');
    $table->unsignedBigInteger('participant_id');
    $table->boolean('is_seen')->default(false);
    $table->timestamps();

    $table->foreign('chat_message_id')->references('id')->on('chat_messages');
    $table->foreign('conversation_id')->references('id')->on('chat_conversations');
    $table->foreign('participant_id')->references('id')->on('chat_participants');
});

Models

class ChatConversation extends Model
{
    use HasFactory;

    protected $table = 'chat_conversations';

    protected $fillable = [
        'id',
    ];

    public function participants()
    {
        return $this->hasMany(ChatParticipant::class, 'conversation_id');
    }

    public function messages()
    {
        return $this->hasMany(ChatMessage::class, 'conversation_id');
    }
}

class ChatParticipant extends Model
{
    use HasFactory;

    protected $database = 'chat_participants';

    protected $fillable = [
        'id',
        'conversation_id',
        'sender_id',
        'sender_type',
    ];

    public function conversation()
    {
        return $this->belongsTo(ChatConversation::class);
    }

    public function sender()
    {
        return $this->morphTo();
    }
}

class ChatMessage extends Model
{
    use HasFactory;

    protected $database = 'chat_messages';

    protected $fillable = [
        'id',
        'message',
        'conversation_id',
        'participant_id',
        'type', // This should be text,audio,video
    ];

    public function conversation()
    {
        return $this->belongsTo(ChatConversation::class, 'conversation_id');
    }

    public function sender()
    {
        return $this->morphTo();
    }
}

class ChatNotifications extends Model
{
    use HasFactory;

    protected $database = 'chat_notifications';

    protected $fillable = [
        'id',
        'chat_message_id',
        'sender_id',
        'sender_type',
        'conversation_id',
        'participant_id',
        'is_seen',
    ];

    public function conversation()
    {
        return $this->belongsTo(ChatConversation::class);
    }
}

class User extends Authenticatable {
    public function messages()
    {
        return $this->morphMany(ChatMessage::class, 'sender');
    }

    public function conversations()
    {
        return $this->hasMany(ChatConversation::class);
    }

    public function participants()
    {
        return $this->belongsToMany(ChatParticipant::class);
    }
}

class Client extends Authenticatable {
    public function messages()
    {
        return $this->morphMany(ChatMessage::class, 'sender');
    }

    public function conversations()
    {
        return $this->hasMany(ChatConversation::class);
    }

    public function participants()
    {
        return $this->belongsToMany(ChatParticipant::class);
    }
}

My issue is that I want to get the name of the user/client that has created the message. Something like this

$chatConversation = ChatConversation::first();

dd($chatConversation->messages->first()->sender);