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 risks by playing this kind of gamble?
This is similar to the lottery which is so popular in my country. We call it "TOGEL" where people can bet 2 last digits, 3 last digits and 4 complete digits. Yours is better in terms of the payout, here in my country the payout for 2 digits is only 60x (offline) and 70x (online), 3 digits payout is 400x for both online and offline, while 4digits gives 2500x offline and 3000x online. It is obvious that the house edge is so huge but there are still so many people love to play this lottery because I do think that they do not care about house edge. There are many people do a strategy that they call by "invest" strategy where they buy up to 60 numbers or more to get higher chance of small winning. Most of them do it online since it is better to do it online because of the bigger payout for 2 digits lottery and there is also a discount if people buy it online. The discount usually starting from 25-30%, so if we buy a 2 digits ticket for 1USD then we need to pay $0.75-0.70 only. Unfortunately this lottery is available online for local players only as the payment method is using local bank transfer.