All you need to create web site galleries of your images in Adobe Lightroom is Adobe Lightroom and a web server/FTP server.
In the WEB module, you can lay out your gallery of selected images any way you like.. many templates are available and many settings are available in these templates. For instance, like this:
Which, once you upload it to a web server, leads to a web site like this:
I hope this spurs you on to doing something with your pictures: get a web host, learn how to FTP files to it, and share your pictures with friends and family – or with clients – with minimal effort.