Smooth platformer Movement (horizontal)

Hey there! How to make a smooth character move? (i think i must do something with math.lerp and time.deltatime) Thanks in advance

 public float speed = 10;
 
 void Move(float horizonalInput)
     {
         if(!canMoveInAir && !isGrounded)
             return;
         Vector2 moveVel = myBody.velocity;
         moveVel.x = horizonalInput *  speed;
         myBody.velocity = moveVel;
         if (!isGrounded) {
             moveVel.x = horizonalInput * speed;
             myBody.velocity = moveVel;
         }
     }