You certainly have a lot of market value to defend here. If you can manage to get into the YouTube advertising circle, you will get a lot of customers on your channel. But gambling is not allowed everywhere, so that seems to me to be a big problem at the moment. But it's a matter of knowing people and building a connection, that usually makes things a lot easier. Many well-known platforms do not accept it if you want to have a gambling site regulated by law and regulations.
If gambling is not allowed everywhere, of course there will be no advertisements that appear because the chances for people who see these advertisements to be interested are zero, gambling is prohibited only as a place and everything can be tricked with VPN and others, that's why gambling advertisements massive but the appearance of this ad while someone is watching YouTube is dependent on your search on the internet because usually it will be connected, so I can say that those who can only do a search about religion have a small chance of seeing gambling ads but when someone has done a search about games and something that has to do with gambling then it will show ads when you view youtube, so it doesn't increase just depending on your search.