hey queers. if you have a steam login that involves your deadname, you can message steam support and ask to change it. they don't normally let you change it but they can make exceptions for a good reason like that
this is where i clicked on the desktop app:
- my name/icon in the top right
- account details
- "get support" near bottom of page
- "my account"
- "data related to your steam account"
- way down at the bottom "contact steam support"