To claim a FREE Y9S2 Battle Pass in Rainbow Six Siege, you generally cannot obtain it without purchasing it or earning it through specific promotions or events. The search results provided do not explicitly mention a way to claim a free Y9S2 Battle Pass. However, you can refer to the following information based on the search results:

  1. Bravo Pack Tickets: The search results mention Bravo Packs and tickets, which are part of the Battle Pass rewards system. These tickets can be earned by progressing through the Battle Pass tiers and can be used to claim random rewards like skins, weapon charms, and other cosmetics.

  2. Operator Voucher: There is a mention of an operator voucher, which is not directly related to claiming a free Battle Pass, but it is a feature that allows you to unlock an operator of your choice if you have all other operators except for the one you want.

  3. Battle Pass Walkthroughs: The YouTube videos provided do not detail how to claim a free Battle Pass, but they offer walkthroughs of the Battle Pass content for Y9S2, which might help you decide if you want to purchase the Battle Pass.

In summary, there is no direct information provided in the search results about claiming a free Y9S2 Battle Pass in Rainbow Six Siege. To obtain a Battle Pass, you typically need to purchase it or participate in promotions or events that may offer it as a reward.