https://www.quora.com/What-are-the-online-website-builders-that-are-completely-free-unlike-Wix-that-requires-you-to-pay-them-to-get-a-custom-domain-they-also-ask-to-pay-Wix-for-other-features-as-well
Some free website builders that are as good as or better than Wix are Weebly, Site123, and Jimdo. As you know Wix is not a free website builder.

https://www.warriorforum.com/main-internet-marketing-discussion-forum/725452-what-best-free-website-builder.html
I think you should consider Wordpress. Only have to buy the domains, WP is free and a high performance tool.

https://www.youtube.com/watch?v=Pvi_metetxk
Looking for the BEST Website Builder? I've tried all of them and in this video I reveal my top recommendation for the best website builder ...