There are a few things you can do to know if someone has read your DM on Instagram.

  1. Check to see if they have replied to your message. If they haven’t, it’s likely that they haven’t seen the message and don’t want to be bothered.
  2. Check their account history to see if they’ve been following other people’s DMs. If so, it’s likely that they’re interested in what you have to say and would like to hear more from you.
  3. Ask them directly if they’ve read your DM and whether they enjoyed it. This will show that you’re interested in getting in touch and that you value their opinion.