I recently bought smart home gadgets like smart lights, plugs, and a doorbell. I’m concerned about security vulnerabilities. How can I ensure they don't become entry points for hackers? Do I need a separate Wi-Fi network or firewall settings?

I live in a dense neighborhood, so I’m particularly concerned about devices being exposed on the local network. Would love to hear what other users are doing to lock down their smart home setups while still enjoying the convenience.