I am a parttime game dev, i use admob and sometimes adcolony, but I’d advice you to use adcolony. Alternatively you can use Unity ads, but it is only effective in top tier countries
i used unity ads once and it didn’t work with me. also i used applovin and i ended earning 0.3$ per day instead of 5$ per day(with admob).
i don’t want to experience what happened with applovin to be repeated that’s why i’m looking for a better ad network.
some people adviced me to use facebook audience network but the problem is that FAN only shows ads when the facebook app is installed on the user’s device.
in my opinion google admob is the best but you don’t know when they will close your account for no reason and that’s sad.