Please, read the rules before creating giveaways: https://www.steamgifts.com/about/faq

...

amigão, é só clicar em "enter giveaway" nos sorteios

(aliás, você tem essa cópia de r6 mesmo, né? teu perfil só é suspeito hehe)

If you're asking how to win games, first you need someone willing to give a game away. They create a giveaway like the one you created for R6 Siege. Everyone who "enters" into these giveaways is hoping they are randomly selected by the site to receive the gift. If you already knew this then I'm sorry for wasting your time. But if you don't intend to give a copy of Rainbow Six Siege to someone, you might want to delete this giveaway that you created. ;)

Great, another person who probably doesn't either read the rules or put 2+2 together.

Look, if you are not giving this away, delete this because you are only going to cause yourself some trouble. What you are doing by having this up is saying you will give this game to one of us (you don't win it, we do) once the time runs out. Read the rules of things you engage in instead of jumping before looking.
If you want to win this game, you need to wait for someone else to have this giveaway. Go read the rules please https://www.steamgifts.com/about/faq

Not really. Read the thread.

this is really suspecious tbh

a steam lvl 4 f2p player giving away r6 siege? don't get me wrong, but this is waaay weird