Basically, the reason why the government bans gambling in its country is religion. However, another factor is the issue of crime, as gambling is often considered a cause of high crime rates in a region. This policy aims to prevent this potential. Furthermore, it's linked to poverty, mental health, and various other reasons. All of the government's reasons are make sense, although not all of these factors are 100% caused by gambling.

https://www.ntu.ac.uk/about-us/news/news-articles/2023/03/betting-shops-shown-to-contribute-to-higher-neighbourhood-crime-figures
https://www.monash.edu/medicine/news/latest/2024-articles/urgent-global-action-needed-on-gambling-harms,-international-experts-say