I’ve seen that you have demo content within the site library that supports beaver builer pro and elementor.
My suggestion is to have a closer look at Bold Page Builder: https://wordpress.org/plugins/bold-page-builder/
It’s one of the few 100% free page builders. Unlike beaver puilder and elementor there is no pro version that you’d have to pay for.
Do you have any experience with this builder and it’s compatibility to generate press? I used it once or twice and think it’s quite good.
i have no personal experience of this builder. GP is coded to work with all well coded plugins so shouldn’t see an issue with it working if there coding standards are up to scratch.
Personally if i can do without a page builder i will. We support Element and Beaver Builder in the Site Library because we have a large user base that work with those plugins.