in op it says play anonymously but in my account it has place to upload documents. is it really anonymous or do you need copy of my id to cashout?
Well, it is common to a gambling site that has required KYC if you are wanted to withdraw a huge amount. But if that is a small amount, KYC is not needed just like what @mu_enrico said above, there is no problem with the small amount.
Perhaps you did not read the AML Policy of Roobet. Read this carefully and perhaps you skipped this before you posted it here.
Step three verification: AML 2
Step three verification, verification of the source of funds, must be done by every user which deposit over 5000$ (five thousand Dollar) or withdraws over 5000$ (five thousand Dollar) or sends another user over 3000$ (three thousand Dollar), over the period of 24 months.