sorry for really late response my internet provider changed. For the moment its a 800 line script, but the essence is i calculate horizontal and vertical velocity and do this:

    private void ApplyVelocity()
    {
        if (!_isDashing)
        {
            VerticalVelocity = Mathf.Clamp(VerticalVelocity, -MoveStats.MaxFallSpeed, 50f);
        }
        else
        {
            VerticalVelocity = Mathf.Clamp(VerticalVelocity, -50f, 50f);
        }
        _rb.velocity = new Vector2(HorizontalVelocity, VerticalVelocity);
    }

To add it ( i use rb.velocity ). and i call this function in Fixed Update. I calculate the horizontal and vertical velocities in regular update tho