Practically all forms of betting online have been illegal under the 1867 Public Gambling Act. This act was originally introduced when the country was under the control of the British Empire. The regulation has been modified to allow occasional lotteries, and the only major exception is placing bets on horses.
https://sportsbettingbangladesh.com/
The Bangladesh Rama Race Course, the famous racetrack that in the post-colonial age used to host Sunday contests, is now a memorial ground named Suhrawardy Udyan. It commemorates the place where the Pakistani army admitted defeat in 1971 and for years, there has been no competitive racing here. Used earlier as a tourist site and for rallies, the area has rapidly decayed since then.