By Gabrel Matteazzi. Tennis coach Florida USA @nextennis
As seen in these pictures, if instead of accelerating the racket against the ball we hold the racket , just drive the core of our body to the ball, and lag the racket head and just present the grip below the ball, we can create tremendous acceleration and spin on the ball.
All the modern players are hitting their forehands this way.
It would be ideal to find a pro that can help you with the process of course, but you can find in the pictures a clear idea of how the players hit their big forehand.