gamer3514 I don’t believe my VPS provider offers a way to set it via the dashboard
If they really don’t offer a way to set the PTR record, you’ll have to contact them and they’ll have to set it for you. But as @DocFraggle said, most VPS providers (or at least the ones I have used) offer such a setting in their dashboard. It’s usually in the settings for the VM/VPS and may also be called “Reverse DNS”.