I control map in early better vs Soviet player, have fuel box to cover (he not) and when i still have 36 fuel and waiting to build Wind tank (dont buy any car, just save fuel to buy Wind as soon as) - He have 1 light tank, 1 half track with heavy gun Go around and kill my AT and army. Yes, i can use gren with anti tank on hand but it's too hard with a good player always keep their tank in long sight.
This is absolutely a learn2play issue, sorry.
That is nothing to be annoyed about, but ranting about balance because of this is the wrong way to go.
It seems like you have been stomped by Allies lately. Yes, Allies are pretty strong at the moment (especially USF and Brits), but they can be beaten and the commanders you mentioned (at least the USF heavy infantry commander) is not as OP as you might thing. Rangers are really strong, yes, but the Pershing is not as good as it seems.
You don't buy an Ostwind as your first unit. To be honest, don't buy Ostwinds at all, because at the moment, a Panzer 4 is in 95% of the time definetly a better choice. Ostwind suffers against tanks and even a Soviet T70 can destroy it, if played right. The kiting (driving away in range with tanks) is an esential part of the gameplay and no balance issue. It would be way too easy hitting every tank with your Panzerfaust, wouldn't it?
Back to the commanders:
Yes there are commanders, that are better than others and mostly they are not free at the beginning. But every faction has them. And you can unlock the via war spoils. I haven't bought anything besides the game and WFA at all and still I win some games and lose some games.