My installed website mobile version does not look like demo on Themeforest

Hi! I installed a pro theme life news and filled it with new posts. But I don’t understand why the mobile version for tablets and smartphones does not look on my website (http://bali.click/) like it looks on the demo website (https://demo.tagdiv.com/newspaper_life_news/). There’s only the column with teasers of the last news reflected on my website. But on the demo website there are all the blocks with different formatting.

Have I done something wrong during the process of installation? Not installed some important functions? Or I need somehow to build the tablet and mobile version from scratch by myself?

To be honest the way the mobile version looks was one of the criteria for me to choose this exact theme. Very sad that it does not work properly.

https://drive.google.com/file/d/1RdX8lV1bFnDHyKDWNbf_n2nc3fiSZo_3/view?usp=drivesdk

https://drive.google.com/file/d/1Rdl5YAsAne8MISxamJx3ZuxWnFeALvrr/view?usp=drivesdk

This is how my website and demo version look on my tab Samsung s6 lite. I see the difference. Why is it different? Do i have to install something to make them look same?

More. This is how my site looks on my mobile phone.

https://drive.google.com/file/d/1xOpmnZuWPV9OXEaUdJivSpNfuPNQRU3P/view?usp=drivesdk

https://drive.google.com/file/d/1xTib8cfxGMfvuqYTIPii6sP-N2vxFFyI/view?usp=drivesdk

And this is how the advertized demosite looks on my mobile phone

https://drive.google.com/file/d/1xVMb0OPOIyspSG8yZsR84AidKtx5x_nE/view?usp=drivesdk

https://drive.google.com/file/d/1xV_b9b_Xyk2dLUi8xraqAK8318Xxqy_E/view?usp=drivesdk

https://drive.google.com/file/d/1xViqsem0vokEeYeYP12WizpxzDK3rwmj/view?usp=drivesdk

https://drive.google.com/file/d/1x_2HMNV1QDT_W6ZUEwglZ3SCzkZRxLcP/view?usp=drivesdk

Totally different! Why?

Could you please give me the answer?

Excuse me! Can you please give me an answer?