Unable to download apps on MacBook Air

Did you try to download it from the developers website?

You may need to change the settings for downloading and installing 3rd party apps in the settings on your Mac.

Have a look at the steps mentioned in this article:

Install and uninstall apps from the internet or a disc on Mac - Apple Support

Sorry, but this is not the official Apple Support. This is a user to user forum, and we are trying to help other fellow users having technical issues.

You can contact the official Apple Support directly by choosing the phone number for your region from this Apple Support page:

Contact Apple for support and service - Apple Support

However, if you can not download any apps, did you make sure, that your Apple ID payment information has been set up completely?

If you need to change or update your Apple ID payment method - Apple Support

Any error messages given?

If your payment method is declined in the App Store or iTunes Store - Apple Support

Do you have enough Apple ID balance to buy those apps?

Any restrictions set up in the settings for Screen Time, that might block purchases and downloads from the AppStore?

Sorry you are experiencing this issue

But as you have addressed this issue to Apple Inc.

This is the incorrect place to be posting

These Forums are only Hosted by Apple

The entities on the Forums are only fellow Apple Users just like you and me

Then have a few suggestions ;

Start now and open an Apple Support Ticket as they are PAID  Apple Employees to deal will these types of issues . 

 Product Feedback - for Apple MacBook Air >> Apple and make it known to Apple regarding this ongoing issue 

Follow on

Should you decide to provide some reliable , accurate, details / context plus which specific Poker application is causing issues

We maybe able to assist

There are most who come to the Forums seek genuine solutions to Apple related Products and Services..

For that, the contributors presently on your question have offered as volunteers to assist

Then, there are some, not all, who come to seek their Moment in the Sun

Should one decide to accept the help being offered

Please proceed by suppling the requested inform and / or follow the links provided by my colleague

Have a great day and hope to hear more constructive comment