How to stock grind top tier attack aircraft?

I reached Su-25SM3 (This also applies to the new A-10) and it’s just a nightmare… How should I upgrade it? I only have short-range missiles and no dipoles… I’m not even talking about speed… These planes are absolutely unplayable on 12.7 air RB

Buy a premium pack or do simulator battles, or finish the stock grind of the vehicle and put talisman on it, and it will give you extra research points. Or shoot down AI targets and bomb bases. That should do the trick!

So… it’s almost impossible without donate? I tried sim, it pain as well.

Or spend money

Spoiler

JK DON’T SPEND MONEY!!!

I… i… Already buy premium, I’m not so rich to spend more…

Unfortunately you will have to suffer trying to bomb bases or AI targets in Air Battles, if your loadout is adequate enough you can also do CAS in Ground Battles

just play 1 or 2 sim battles. It should give you enough RP for unlocking all aspect missiles and air to ground weapons