Unfortunately, due to the way that Roblox is set up, it isn’t possible to enable voice chat without an ID. To enable voice chat on Roblox, you need to be logged in to your account or be invited to a game by someone who is already logged in and playing. This is due to Roblox using your account information to help keep out anyone who is not playing the game for the right reasons.
There are a few things you can do if you don’t have an account on Roblox. You can search for other gamers who are playing the same game as you, and attempt to talk with them through text chat or a third-party chat program such as Discord if the game server has voice chat enabled. This can be a great way to connect with other gamers and make new friends. You can also join a Roblox group, which often have chats and other ways of communicating with other members.
Ultimately, to take part in voice chat on Roblox, you will need to sign up for an account and be logged in. It may be worth considering if voice chat is an important aspect of the game you’re playing.