Blah, in a real game forwards are sandwiched between the opposing defenders and midfielders, usually when opposing MC gets the ball the STs will try to steal the ball from them giving some pressure, how is that defenseless?

And yes, STs can block shots of midfielders in this game, it just rarely happen to MC but often happen to DMC who tried to shoot from afar.

And no, 10 vs 11 isn't an insurmountable deficit even at the professional level. Don't overestimate a 9% advantage, it may make no difference at all, or you may win thanks to it.