There’s been some discussion of it over here:

https://midwest.social/post/20550190

For now, you can get it to embed if you grab the mp4 URL and post that directly, but you lose the metadata like username, likes, etc

I think until Lemmy gets proper support for embedding loops, feel free to just post the loops.video link like you did, or post the direct mp4 URL, and include the loops.video link in the description.

Also, thanks for posting! Really happy to see more people posting in here 👍