i actually know where the strategic errors were. The common thing would have been to build snipers, Luchs and scout cars to put pressure on allied infantry in midgame. But i don't like being forced to 1 single strat, there must be another way.
Where am i not right with my mentioned aspects?
There is another way... you should try to not use the exact same opening build order (volks spam) vs every faction and on every map.
Every competent brit player will rush a bren carrier vs OKW, which is exactly what happened in this match, he upgraded it with vickers and pushed you off the field cuz you had 0 counters on the field. Believe it or not, but an early raketenwerfer as 3rd or 4th unit that you build is a very effective counter vs the bren carrier if you use it
correctly. The carrier won't be able to one-shot the raketen as well
In general, mainline-inf heavy strats are not recommended vs brits in teamgames as you will get bled to death a lot of times. At one point, you had
SIX mainline squads (4 volks, 2 obers). Using supportive units (HMGs, mortars, ISGs, snipers etc) very well is the key vs them.
Then you built an early flak HT vs brits... why? While the flak ht can be an extremely useful weapon against soviets (esp t1 penal strats) and USF, it is a horrible idea vs UKF. AEC and/or brit AT gun will always shut down the flak HT effectively.
You must exploit the big weaknesses from brit faction as OKW. They got shitty indirect fire and no snares. So a very good way to go is getting 1-2 MG34 and 1-2 ISGs and rush a p4 for example. 5-men inf sections is one of the few strong things that brits got left, so you don't want to engage into 1:1 fights with volksgrens. The MG34 is -again, if used correctly- an excellent support vs brits as they dont have good tools do deal with it, they may lack damage but they got more than enough supression vs the inf sections unless you A-move them without support into the fog of war
You never built a single MG34 this game, all you had was 1 re-captured MG42. No wonder this failed.
Btw, the allies also had better map control throughout the whole game (because they played better, and not because "allies are OP"). So yeah, this and the flak HT decision is why you got overwhelmed by the cromwell.
Once the p4 is here, you could just drive up vs the AT guns with no fcks given as they got no snares. (you might wanna add a sweeper tho and have a raketen ready in the back). A cromwell is not a big threat for a OKW p4. If you feel confident enough in the Anti inf department (for example cuz you got ISGs as well), you can even get a panther straight and do the same procedure.
How you can complain about raketenwerfers in this particular game is beyond me regarding how many vehicles they destroyed.