To modify your Facebook page layout, follow these steps:
Log in to your Facebook account and navigate to your Facebook page.
Click on the "Settings" tab located at the top right corner of your page.
From the settings page, click on "Templates and Tabs" on the left-hand side menu.
Under the "Templates" section, you will see a list of available templates that you can choose from. Click on "View Details" for any template you're interested in.
You will see a preview of the template, along with the features that come with it. If you like the template, click on "Apply Template" to change your page's layout.
Note: Changing your template may affect the order of your tabs, so make sure to review and rearrange them as necessary.
If you want to customize your page layout further, you can click on the "Edit" button for any tab on your page and use the editing tools provided by Facebook. You can add, remove, or reorder sections, change the cover photo, and more. Keep in mind that some features may only be available on certain templates.
I hope this helps you modify your Facebook page layout!