You play as a rich man, who has been blessed your whole life with everything one can wish for. So, many approaches only take advantage of you. But since you are not a kid you are well aware of everything and everyone. But still, you can’t say that you don’t enjoy your life.
In order for you to be able to install this game, you need to enable (allow) installation of applications from unknown sources (Unknown sources) in the phone settings. Usually this item is in the Security section