[Manal]

As I’ve mentioned in the main post, I want something that I can host on my own VPS. Those services you mentioned force you to have it hosted on their servers, and the fact I can’t even use my own domain with a free account makes matters even worse. Not really what I’m looking for, but thanks for the suggestion.

I know a cheaper-but-illegal way to have a "self-hosted" site builder which you may not call it "self-hosted".
Make a free Weebly website. Download the content using HTTRack and edit a few lines in the template removing the watermark and copyrights and upload it to your website. And wait for Weebly to issue your DC a takedown for your website :-)