People ignore your DMs because they check your profile first. If your bio, posts, and links look weak, they leave you on read. Fix your personal brand and the message itself becomes less important.
Chapters
So you're sending out DMs and nobody's responding to them. Totally common. Let's fix it. You gotta understand how people think about DMs. When you send a DM, they don't respond right away. They click on your profile, they click on the link in bio, they go over a few posts. If you seem legit, they reply, and if not, they ignore you. There's like 6 steps people go through before they even respond to your DM. So if you're sending a DM and it's not getting responses, it's probably not the DM that's wrong. It's that the image you're giving people is wrong. Fix your bio. Your LinkedIn bio? Do you show competence in your pinned posts? Do you actually give people a reason to think he is that guy? That's when your DM response rate goes up. It's got nothing to do with the message, it's got everything to do with the messenger. Focus on the messenger and the message does itself.