specified command or file not found.

[wezaa101]

Hi, getting this error

PS C:\Users\USER\Documents\DepotDownloader-windows-x64> dotnet DepotDownloader.dll -app 516750 -depot 516751 -manifest 411746810087182068 -username STEAMNAME -password "STEAMPASS with &" -validate
Could not execute because the specified command or file was not found.
Possible reasons for this include:

• You misspelled a built-in dotnet command.
• You intended to execute a .NET program, but dotnet-DepotDownloader.dll does not exist.
• You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.

Have .net 9 installed.

Never used .net before, totally out of my depth here. Thanks for help.