OP it's talking about apps, not websitesFor Malaysia, AdSense works but the approval can be tricky and RPM isn’t always great. A lot of publishers I know try PropellerAds, Adsterra, or Media.net as alternatives. Pop and push networks also monetize well in that region -I personally had okay results with AdMaven on Malaysian traffic, especially with push ads. Best thing is to test a couple of them side by side since performance really depends on your audience.
If you're just starting out, don't make the mistake of plugging in a single ad network like AdMob alone. If they random-ban you or your fill rate drops, your revenue goes to zero overnight.What platforms are you using nowadays, for ad monetization, for your apps?
Are you using other in-app monetization methods? I have a casual game and a utility app ready to submit for monetization.