The video is misleading, females in general are not promiscious, on average they have about 7 sexpartners during their entire life.
In some cases they just take males out on dates to get free meals. By going on dates like that you are just giving away resources and you are probably not getting anything in return.
You do not need to go through any of that dating bullshit to get sex and females in general are unwilling to actually get to know you, they prefer keeping ypu at a distance.