Learning in the Open
You should commit to learning the React framework. The ecosystem is massive and you'll find lots of support for whatever it is you end doing because of that. Think of it as including ready-made (Lego) bricks to your build. Don't reinvent the wheel. Learning the most widely used framework in the world well will pay dividends you can't conceive of right now.
Being able to return to a previous state is invaluable. The directory you're working from should include a git folder. Then whenever you develop a new feature you branch out first, away from the main tree. Git is basically a tree consisting of nodes that you can return to whenever you please. Each node is a "commit". You're committing to its history and growth. Whenever you change something you should make a new commit and add a description of what it is you're trying to accomplish. I use active phrases for my commits for a variety of reasons that I may return to later. Git allows you to select a branch and say to a service like Netlify "hey this is the production branch, only deploy automatically from this branch". Now you can safely test, and experiment with, your other branches without affecting the product your customers are using. I won't dive into how Git works here but I will urge you to prioritise it as a learning goal.
Incomplete sentence? "There was a good base that made all of the common tasks very easy, but actually using the program for client work was pretty slow to kick off. It had value to me, but it"
Incorrect word order? "How can easily I make multiple pages of static graphs?" Sounds wrong to my ear, and almost made me stop reading, but I'm overly sensitive. You may not care or maybe it's correct and I'm just a whiny asshole.
Your pitch is excellent for its intended audience. "Scratch for data viz" . It's short and easy to remember. Easy to google for.
That initial draft made me pause. I'm impressed. I think your aim is to develop a proper user interface to make the design of such visualisations easier to accomplish. If that's incorrect, please correct me.
Best of luck and never give up.
You better salute me I read to the end but with not much understanding of your problem. I learned something however, the Dunning Kruger Effect which made me smile.