Many thanks for all of your replies, I have more answers now.
Forgot to say that those 16-18k tickets comes from a 49/50 members, 84 million GP guild.
I play the game since mid October 18, and to be honest what you all said has been in my head since December or so.
I mean, I am fighting in arena with people with 200 raids done, when I am at less than 100!!!
Add to this the poor reward of a low rank in raids due to bad time zone...
You have an idea about how much I feel to have lost in this time.
So what I am gonna do is:
I will wait the end of the TW (we lost), say thanks to everybody, wish the best of luck, and start my new adventure elsewhere!
Really thanks for all the quick replies, you guys are amazing ;)