I started my own business, now what?

I've been building a SaaS platform for international calling for the last year, targeted at digital nomads and small businesses that need reliable, affordable calls across borders.

No marketing spend so far. 150 users signed up organically; 12 converted to paid, with ~$100 MRR.

At this point, I'm trying to figure out the right next step. A few things I'm genuinely unsure about:

• Whether to double down on a specific niche (nomads vs. SMBs feel like different audiences with different needs)
• How to find the channels that actually work for this — SEO feels slow, communities feel manual, ads feel premature at this MRR
• Whether hiring a marketing agency makes sense at this stage, or if that's just burning money before finding product-market fit

Happy to hear from anyone who's grown a similar tool — what moved the needle early on, and what was a waste of time?