in my experience, the mind games only work on a certain type of girl. This type of girl usually has some kind of issues with insecurity, neediness and approval seeking. Playing mind games is playing on her insecurities. It will get you laid but not good for anything more. Usually, you can never really relax and be yourself because once all the games stop you will lose the thing that made her attracted to you in the first place. Mind games don't work on smart confident girls who have their shit together and who are happy with themselves. Doesn't mean you can't work on yourself and become the type of guy that girls will be attracted to anyway. So being straight up is better in my opinion. You will get rejected a lot but it weeds out all the girls that aren't a naturally good fit for you. Maybe you're being a little too straightforward and you don't show that there's any element of fun to you. If you can be playful, light-hearted, maybe even a little energetic, stick to your values and show that you don't take yourself too seriously then that goes a long way. It takes a little time sometimes over the course of a night for a girl to really see that you're pretty cool and she might want to spend some more time with you. So don't be discouraged if a girl doesn't fall for you right away like on those youtube videos.