Why the concurrent performance of my server(ASP .net core + MySQL) is very low? something wrong in my .net code?

I used asp.net core and MySQL.  the connector I used is connector/net. I use apache bench to test， reques per second is only 4.06

Is this normal? I use java spring to test, the request per second is 1000+ ....

I just want to know is it because something wrong in my code?