I don't what you called this in your country or in English.
We called this "Last Two"(2 DIGITS) , "Swertres"(3 DIGITS) .
Currently they have this draw scheduled every 2pm, 5pm, 9pm (GMT +8).
If you will hit in 2digits, if you bet 0.20 USD, you will win 16USD.
In Swertres(3 DIGITS), 0.20USD bet will become 124USD if win.

Any idea where I can do this online and they are accepting Bitcoin or other crypto?

And also, any ideas or strategy/tricks/advices to maximize profits and minimise profits by playing this kind of gamble?