Well, among a certain subcategory of locals, it is of course it is common knowledge here that you can live quite easily on 10k pesos per month, that is if you "supplement" that with a much larger income from a foreign sponsor. Even better is to have two or three sponsors who don't know about each other. ????????????
Among another subcategory of locals (and this is more common) another option is to cohabitate with many family members who share expenses.
For yet another subcategory of locals, the long game is to educate your children so that they are qualified to work abroad and send money and balikbayan boxes back home to supplement your income.
But of course, since in all fairness you don't fall into any of these subcategories, none of these are options for you, as you lack the experiential and family/cultural background to make any of these work for you. So, assuming that your unit also includes electricity and water, your 10k budget for food can work if you eat a lot of rice and are creative about where you source your protein. Think about things that you can catch if you are hungry and not at all picky. Watch the local cats to see what they catch and eat for inspiration. And when protein still runs short, maybe think of the cats again. Hmmm. Cats......
But if you can afford a maid then certainly the 10k must be just your food budget. I suppose that with a rice base, cheap veggies and the cheapest proteins that you can find or forage, it might be possible. More so maybe if you live on the coast where you can do some subsistence fishing.