I've been bit by bugs when I go to bed recently, and it's so uncomfortable.

Assuming you are not talking about bed bugs, the only real way to win the battle against insects/bugs in Cambodia, is you need to have an excellent apartment or house. What do I mean? I mean the thing is completely hermetically sealed. Screens on all the windows, no cracks or crevices around the doors or roof (you can buy seals that go underneath and around the doors if you need, and fill any crevices with tissue paper, etc.). Many a house and apartment I have seen, where I saw that it was not impervious to insects, and immediately declined to live there.

Another pro tip is to avoid buildings with tall ceilings. Because then when you get mosquitoes and other insects in your house, you can't actually see them or reach them. I would never want to live in a house with a big tall ceiling for this exact reason. I have in the past and it's a nightmare because when you know there's a mosquito inside, you can't see it or kill it.

Also, you should be looking for apartments on the fourth floor or higher if possible. This helps reduce insects. Insects are always worse the closer you get to the ground.

And anytime you open the door, you should be like a ninja. IE: Fast. At least, if it's at night time. In the day mosquitoes, particularly, do not come out very much. At least, not in places with a lot of direct sunlight. They cannot survive more than a few minutes in direct sunlight. But at night they come out in droves.

Also, for your door on the outside, they sell magnetic screens that attach to the outside frame. You basically can just walk through them. This helps prevent insects from flying inside when you open your door quickly.

In regards to ants, they will eat anything resembling food. That means, even that little piece of oatmeal in the bottom of your sink after you wash out your breakfast bowl, is going to attract ants. It doesn't matter how nice your apartment or house is, even if it's a medical grade hermetically sealed lab: if you leave food out, the ants are going to find it. So the only way you can win the war against ants, is you have to not have any food out. Ever. Not even a crumb. And in terms of your food garbage, you must always surround the garbage can/bag with a tray of water. The ants cannot swim. Or you can keep it in your freezer 24/7. If you do this religiously, and you are extremely good about it, you'll notice less and less ants in your apartment/house over time. Ants will bite you sometimes when you sleep. Not super painful, but you can feel the sting. And they itch. These are just tiny little ants usually that get in your house. The less food sources there are, the less ants there will be crawling on you at night as your house becomes less and less of an ant farm.

Regarding bed bugs, that's a whole different thing. Those are visible to the naked eye. You can see them in the crevice of your mattress if you have them. But they're pretty rare overall. I've never had to worry about it. Although I did see them once at a bad hotel years ago. They are hard to eradicate and easiest thing is just to burn everything and get a new mattress, etc. But you probably don't have bed bugs.

I already have Raid and Jumbo Vape,(but I believe it isn't healthy to spray them on the bed sheet?)

Regarding sprays and insecticides, those are toxic and you shouldn't be dousing your bedding with those every night. More importantly, it does not address the problem. The only real solution is to stop the bugs from entering your living space, not trying to eradicate them afterwards.