Maybe then Talkyard (https://www.talkyard.io/blog-comments https://www.talkyard.io/blog-comments) is interesting to you: It's hosted & serverless, like Faceboo

Maybe then Talkyard (https://www.talkyard.io/blog-comments https://www.talkyard.io/blog-comments) is interesting to you: It's hosted & serverless, like Facebook and Disqus. But at the same time, it's open source, so you will be able to export your comments from Talkyard's servers, install Talkyard yourself and import the comments. (But I haven't yet built export and import functionality :- P )