Your use MG is wrong. It is not front weapon. It is support for yours grens. Dont leave your MG alone, it is mistake.
Posters above have already made this point, even supporting the mg doesn't help much because unlike coh1 the attacking squad won't take enough damage from the supporting unit before it can molotov the mg and still turn to fight the second unit.
In Coh1 there was no rifle oorah and teching grenades had a serious cost elsewhere in your abilities in the early game.
The MG42 needs to be slightly meaner. As I believe this is going to happen I'm not too worried about it.