Why do you avoid exchanges that require KYC? What's bad about it? What are you afraid of? Why do tens of millions of users have passed KYC and don't think about anything?
It's rather surprising that you don't know why some people avoid using exchanges that require KYC
One of the reasons is some exchanges Block users from certain countries using their services by identifying them from KYC. So they can't use such exchanges to buy or sell Bitcoin. Platforms like Bisq are a great option.
Also read this good post by 1miau:
Why KYC is extremely dangerous – and useless