Hank here from Shopify.
Would it be possible to share your store URL, and to confirm what theme you are using? If you are unsure of how to locate which team you have, and to find out who supports it, you can do so as per this guide.
With your URL, there may be a developer on the Community forums that may be able to advise, but your theme developer may be able to change how the mobile layout appears. Normally, the mobile is a smaller scaled version of the laptop/desktop version, but some themes can be edited to streamline the mobile version of your store.
Another option for you could be reaching out to one of the Shopify Experts, who you can hire to do almost any custom work on your store. If you were to reach out to them about this query, they would be able to resolve this issue for you as well.
Let me know any additional questions you have!
All the best,
Thank you for confirming for me.
As this is a third party theme, you will need to reach out to your theme developer to get them to make these changes for you as this would not be supported by Shopify. To make this easier for you, I have their information here.