Finding the best ad network for a blog with low traffic can be tricky. You should focus on networks that accept small publishers. Google AdSense is a good option for many blogs. You can also try Media.net for contextual ads. PropellerAds works well for blogs with limited traffic. Adsterra provides great monetization for smaller sites. You should look into Ezoic, which supports new blogs. You can start with any of these and test their performance. You should always prioritize user experience when placing ads. Picking the right network can help you grow your revenue over time.