Everyone's obsessed with ad networks, but 900k views from Indonesia? That's not a monetisation problem-it's a traffic quality problem. Indonesian CPMs are garbage, and clean banners? good luck finding any network that isn't shady there.
But fine, you asked. If you're dead set on avoiding AdSense, your best bet is probably direct ad sales or a managed network like Playwire. PropellerAds might work, but expect popunders. Media.net is Google-backed, so that's out.
honestly, you'd be better off building a lead gen funnel or selling your own digital product. Chasing ad networks in that region is a fool's errand.