I was told I need to reach 30k sat to say goodbye to captcha, either with a deposit or any other mean (roll, lottery, referral, etc)
You were told wrong. Read the two posts in this thread previous to yours for the correct answer.
he is correct, you need to be above the withdrawal threshold of 30k to have no captcha, I deposited 20k into my account when I 1st started and still had to do the captcha till I hit 30k