Hi, it seems like you posted to Lemmy from mastodon, while this is perfectly possible there are a few things to keep in mind.
The first line of your toot will be the title, this should be pure text and avoid things like links, emoji, and other text markup as Lemmy doesn’t render those.
Lemmy will only ever show the first image on a mastodon toot.
Lemmy doesn’t handle image alt text very well, this is not a huge issue and I expect this one to get resolved as time goes on.