>What should I do?

You should take a moment, and try to understand the other side of your request.

Read this response from /r/antiwork, it's about a new manager having to get his team to understand work life balance: https://www.reddit.com/r/antiwork/comments/rkk9qg/im_a_new_s...

Also, this issue goes beyond you. If you need something done, with a different org, that is now on your boss to figure out how to get that done, not you.