Your own website, alongside the lead platforms
Lead platforms and directories can keep the work coming, and you don't have to stop using them. The difference is that a lead you buy is often shared with other tradies, while a customer who finds your own website or Google profile calls you and only you.
Your website also catches the people who already know your name: the neighbour who saw your van, the customer whose friend recommended you. They search for you, and your site is what tells them you are the real deal.