Stay away from betting, 90% people are failed at betting, But if you want join in 10%, then watch live match daily, do practice daily by betting small amount.
if you see any success, then bet high amount gradually.
They will allow you only if you have big pages. If not what's the point of adding you in the RT group. As NSFW accounts are search banned, RT groups are only way to get reach.
As far as I know RT groups are free. And you can find them on accounts bio. You can message them too.
Try searching...
