Issues using Dotnet and EF Core terminal

I’m using Dotnet 8, trying to follow an asp.net tutorial. I’m unable to use Entity Framework Core to make a DBContext or add an Initial Migration. When I try to use the menu options I keep on getting “Could not execute because the specified command or file was not found…..” but I added the packages to my project, I have dotnet-ef installed, and have dotnet CLI added to my system’s PATH. I also noticed that I can’t use any dotnet CLI tools in Rider’s terminal. I keep on getting “command not found”. What’s wrong? I’ve read similar posts but nothing seems to work.