Hi Raynor,
Here is a link to a page on this site which gives details about blocking software which includes software suitable for your phone.
I would agree with you that the planned gambling on your birthday made your unplanned gambling more likely to happen. The addiction is weaker when it is starved – throwing it the odd morsel just keeps it hungry for more and gives it the strength to find it. This is why the advice would always to be to avoid all gambling.
I would say the same thing about the lottery, don’t feed it.