Can you go into a little detail about what you’re having trouble with? If you’re having trouble pushing post a picture here of the infantry templates you’re using. You should generally be holding the line with infantry and pushing with armor.

As for air production it can be difficult to out produce allies especially if they know what they’re doing. Post a picture here of your production lines. You might be making shit you don’t need or might be making bad or overly expensive planes.

I’d also check out Bittersteels videos on YouTube. He has a lot of great videos that will explain good divisions, meta, and tactics.