A user with TL0 is a member of the trust_level_0 group. So if you allow members in that group to bypass approval (approve unless allowed groups), then it does not help to add the group also to approve new topics unless allowed groups - trust_level_0 is an allowed group.
You could change approve unless allowed groups to trust_level_1, but that will also affect other users who haven’t reached TL1 yet. I don’t remember a way to force approval for a specific user or group. I think all the settings only allow you to decide who can bypass. But there is a plugin for that Force specific users through moderation