@Melanol This sounds concerning - Please reach out to a trusted friend, family member, or mental health professional if you go through a rough time. There are people who care about you and can help.
Related to your FAF credentials, due to the nature of a requested deletion (As explained from posts above), you have to use another Steam/GOG to make a new FAF account.
If you have further questions about this, you can create a moderation ticket in Discord so we can guide you. The error message "Steam token expired" is in this case misleading, and I will look into it, how the removal request/Steam error message can be made more transparent to the end user.
The thread will be closed, because everything has been addressed.