I've been using Weebly for 7 years and I certainly regret it.
I have hundreds of pages to transfer to a different system so I just put up with Weebly, but for anyone starting out don't even think about it. Run any Weebly website through an SEO checker and then you'll see red everywhere, then there are hundreds of duplicate pages because of the way they create category URLs for the blog. Google hates these duplicates. Page loads are also slow in general because there is no image optimiser.
And the image picked up from a blog post when posting to social media is often something from the overall page template and not the one that you have attached to your post.
These little issues go on and on for years and are never resolved. Just check their forum for all the comments asking why things have not been fixed for years...
If you are working with other products such as landing page builders or email systems it is extremely rare to find integration with Weebly. That means you are often stuck with having to pay Zapier for example to integrate data flows.
It's a total mess, but try to get help from "Support" and you will eventually give up in frustration. Mostly they don't answer. When they do it's worse. So better not to become frustrated and just put up with what you have built until you can muster the energy to transfer to a different system.