You can always check the modlog for recent bans and post/comment removals. They don't even have to be recent if you know the username. If you're viewing from hexbear, the link is always at the bottom of the page (the link in the sidebar is strangely unreliable). It works like this for a lot of instances but not all. You can probably do it there from your lemmy.ml account, but it might show different recent activity, since it's a different instance.