I'm currently offering CRM, systems, voice agents, and chatbots, both as a package and as separate services. Running cold email is out of my budget. What's a good way to start bringing in one or two clients a month with no budget?

Don't focus on the output goal (number of clients) — focus on the input goal, since there's no way to reliably predict output that precisely; you just have to start. You can apply everything I teach about cold email to cold DMs and get the same effect for zero cost — it's less effective and rate-limited, but free. Apply the same optimization concepts one-to-one: subject line, profile picture, teaser copy for email map onto a LinkedIn connection request's profile picture, name, and the first visible words of your message above the fold — all analogous levers you can optimize. Beyond that, also look at communities, and if you can afford it, Upwork Connects are the simplest and easiest way to land a client, because Upwork skips the first two steps of the sales process (convincing someone they have a problem, and convincing them of your solution) — you only have to convince them you're the right person to execute it, which is a lot less work for a beginner than cold DMs where you carry the whole sales process yourself.