I found one but after a limit you cannot use it anymore without making an account now i can surpass it by using different ip but the conversation wouldn’t go in a flow and it will get tiresome fast so if anyone know one which meets these criteria do comment .
They are expensive to run. Why would someone pay the cost and offer it for you to use for free? When it appears free it’s most likely not free.
The word privacy based in your post probably explains it.