still cant launch the game in win7, error: the procedure entry point d3d11on12createdevice could not be located in the dynamic link library d3d11.dll which deepseek said it needs dx12.
Why were you expecting a game developed for windows 10+ to run on windows 7? The go-no-go condition isn't the steam client, it's all the APIs that are present on w10+ and missing on w7. Theoretically, unless someone comes up with the necessary extensions, that game will not run on windows 7, full stop.
DirectX 12 is not supported on Windows 7 (or 8) so any games that don't have a dx11 or 9 version available will not be able to run on it at all sadly... it's one of the few benefits that pushed people towards 10 when it released. The d3d11on12 makes it sound like it's an dx11 game but it's supposedly just a compatibility thing, allowing a dx12 program to use dx11 code. So it isn't going to work.
Thank you for correcting me! This is great information. Still a bit of a shot in the dark but definitely better than having nothing at all.