there's your problem. lulz.

i'd probably cut the roti canai and have half boil eggs instead.

Sugary water are unnecessary calories.
Drink plain water.
Like the previous person said, count your calories.
Dont exceed.

Are your forms good? Ask for someone to check for you.
I personally dont like doing high amount of pushups, but rather I would increase the difficulty once I feel it becomes too easy.
try other harder variations or do them with weights

Reduce the rice, eat something that makes you fuller, more fiber.

I usually eat one slice of cheddar a day, really helps in feeling satiated on top of getting my calcium
You have to balance portion and frequency.
Once you start, stick to it and dont think about it, put yourself in autopilot mode.
I do feel the urge to cheat once in a while, but I always have fruits as snacks.
It's my first time trying for abs too, I wish you good luck bro.
I used to do crunches, but I ditched it. Since most of my calisthenics and lifting routine also involves my core.
I dont do plank also, cos it seems kinda stupid haha.

Extra food + exercise = gain muscle + minimal fat
Extra food + no exercise = gain fat

That said, if you gain a lot of weight in a short period of time, you will gain lots of fat so take it slow. No you don't need whey protein or mass gainers if you eat properly and before you ask, no you can't just lose fat at your belly area either. Now run!

You probably did something ridiculous like over exercising and under eating.

Some stupid question. Will calorie deficit enough to make abs visible? If a person eat kfc everyday but still within calorie deficit, will the abs show? Do i have to eat clean?