Support Rachels suggestion: Establish good content showcasing your expertise (whitepaper, video or something similar) and set up a landing page (in Mailchimp or similar tool), where you ask for registration with mail in exchange for access to your contents. Thought leadership sells.

On top of registered mails/phonenumbers, you can follow up with a call to understand, how you can help. Then you know, you talk to the right people. That will take you much longer with cold-calling.

You can support it with a segmented campaign on f.ex. Linkedin, adds on Google, if you can pay for that. Otherwise, it is just your own postings on social media or websites, where your prospects are.

Good luck - and keep in touch, if you want to talk further.