Hi there!
Don't get discouraged, I'm sure you'll get selected soon.
What matters most, imo, is your location and how the brand is going to market itself in your country. Where are you from?
Also try to be more active and comment on discussions and write quality reviews with pictures and videos.
I have registered on the app in February or March, I think, and I only won in July for the first time.
I also heard that being in Picky Squad helps, so apply for it asap π
Good luck to you and I hope you'll get selected in the nearest future giveaways π₯°