You are a young woman who has finally accepted the truth about herself. What's more, you even installed a dating app to meet lesbians in the big city. But you don't have much time. Or it is just an excuse. In any case, you haven't gone on a single date in over a year. You understand that this is wrong. If you do not change your life, then you will turn into a lonely cat lady.
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