Roobet has KYC with 3 levels, for now they only ask players to do KYC level 1, name, phone number, address, no need to upload any documents, don't know for level 2 and 3, and their live support says the players only do the first level.
It is true that roobet requires users to pass the first stage of KYC to make deposits, withdrawals and other transaction with other users. As quoted below, there are conditions where roobet can suspend a user's funds if they get the user to intentionally fill in the wrong information and allow the user to fill in KYC level two. It seem that the explanation in the quote below is clear enough to understand.
https://roobet.com/ : AML Policy
Step one verification: - KYC
Step one verification is a simple KYC (Know your customer), which must be done by every user and customer to withdraw as recommended in Directive 2018/843. Disregarding the payment choice, the amount of payment, the amount of withdrawing, the choice of withdrawing, and nationality of the user or customer, step one verification must be done before any withdrawal or transaction to another user can be made.
Step one verification is an online document that must be filled out by the user/customer himself faithfully. The following information must be filled in: first name, second name, date of birth, country of usual residence.
We do not allow any withdraws of funds until the KYC is filled in and approved. In case of misinformation or unfaithful filling in, the company may hold the funds until the KYC is approved. We might ask you to do Step two verification before withdrawing any funds if you filled in intentionally wrong information in the KYC online document.