Networking

So I'm now in my second year of being a full time independent handyman, but I started this business when I moved to a new state where I don't really know anyone. I've built up a good network of clients, and the word of mouth keeps new ones coming in regularly. My problem though is my lack of networking among other trades people. I'm starting to get offered bigger and bigger jobs, ones where I either need to give a good referral for some specific part of the project (plumber, electrician, landscaper, drywaller, painter, etc) or hire subcontractors and step up to being a proper GC. My question though is what's the best way to grow my network and meet the right people? Our industry isn't like the white collar world, there's no linkedin or upwork for tradespeople or subcontractors is there? What's a guy in my position to do?

Also, any good tradespeople in eastern Maryland feel free to reach out!