Like, say, Tilda? Most web developers would call it a kind of content management system, but if it's called a Membership Replicator System in your area, let's call it that.

But then you definitely have to learn web development, and that's not good news at all. The fact that you'll need another programming language (JavaScript + DOM API) isn't even the worst part. <rant>(The worst part is having to stay up to date in the maze of twisty little standards mostly set by Google to make it easier to deliver targeted ads because everyone uses Chrome.)</rant> Once you know enough Perl, take a look at Mojolicious / Dancer2 / Catalyst to choose the server-side part and read MDN Web Docs to learn about the client-side part of the website.