Is there a way to get a player's games using their username or to get their user ID using their username?

[Gooplet]

api/v1/players/{id}/games?ended__isnull=0&ordering=-ended&page_size=5

The only reason I know this is because of @shinuito’s answer to this exact question here - How to get the 5 most recent completed games for a user? - #2 by shinuito