My YouTube redirect rule is a bit more complex, but works for all shorts, youtu.be and regular youtube links and it supports time stamps and videos that are part of a playlist.

Set the rule to regular expression, use this one

(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:watch\?v=|shorts\/)|youtu\.be\/)([^&?\/]+[&?]?.*)

remove the two "amp;" at the end (Lemmy formatting is bad, it replaces an ampersand with & even if you tell it not to...) and redirect to https://%yourinstanceofchoice%/watch?v=$1

Enjoy!