Codeberg is founded as a Non-Profit Organization, with the objective to give the Open-Source code that is running our world a safe and friendly home, and to ensure that free code remains free and secure forever.
For a code-free builder, it's not the worst. You can set up a domain name(or subdomain) that you own to go to a Google Site at no additional cost, so if you do that, you'll never be stuck with a hosting platform.
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.
How do I host a website on my Synology NAS? - Synology Knowledge Center
Synology Knowledge Center offers comprehensive support, providing answers to frequently asked questions, troubleshooting steps, software tutorials, and all the technical documentation you may need.