Chain lube is a religious topic among cyclists; there are dozens of options and an endless supply of opinions on what is best. What to use depends on the conditions you ride in, the frequency that you ride, how fastidious you are in your maintenance, and where you store your bike. Generally, if you ride in a lot of muck, choose a wet lube; if you ride in dry conditions, choose a dry lube.
You'll hear a lot about waxing. I used to do it years ago. It runs clean and is low friction. But in my experience, it doesn't last long, and it is a bother to apply. You really need to have two or three chains to rotate in and out of service if you wax. There are ready-to-use wax lubes; I have not tried it, but Squirt has a great reputation. The original, White Lightning, I don't like...too much build up.
I use Rock 'n' Roll Gold. I primarily only ride in dry conditions, and I store my bike indoors. My bike has a Yamaha mid-drive, and the chain now has 2300 miles on it; the chain looks new and I have yet to reach 0.5% wear. I also like that it runs quietly.