This article will explain how to create a photo gallery on a website page using the block editor.
In the dashboard, go to Pages and Add New
Once you have selected Add New, you will be taken to the page editor.
There, you can add a page title (see Photo Gallery below)
Then, click the (+) sign to add a new block.
In the search field, type "Gallery" - this will bring up any gallery style options available on your website.
NOTE: A basic gallery is built in to WordPress. Others such as Carousel, Collage, etc. can be added with a plugin.
Once you have selected a Gallery style, you will have the option to create the gallery by choosing images from the media library or by uploading images from your computer.
Once the gallery is created, make sure to click Publish in the upper right of the edit screen!