What is a good way to attract new customers?

So I run a Cloud Service Provider/Cybersecurity firm and while everything is set up nicely, I notice I am struggling to reach new customers. Note: I have a technical background myself, not a commercial one and it shows

So I’m here trying to figure out what good organic ways of attracting customers are. Right now I focus on LinkedIn, LinkedIn marketing, SEO and strategic partnerships. Unfortunately the growth has been low.

I have no trouble explaining our USPs and closing deals is relatively simple. It’s getting a meeting that’s somehow hard. What would you suggest?