Profile of Aqua

Hello im a newbie who recently started playing CoH2 multiplayer. So far been having fun and the most success as OKW i love their resilience and late game power however ive recently started dreading the vs SU matchup and ive got no idea how to win. When i lose i feel as though i lost to spam and cant pinpoint where i went wrong whereas when i win i feel like it was pure luck or the oponent didint know what hes doing.

Now i have read the posts about okw vs Soviet but i cant even get to the point where i can use flak half-tracks because i either get overrun or get bogged down but soviet arty.

Btw this i my usual build order (could use help here too)
Early volk - volk - volk -Battlegroup Headquarters (usually for the support arty) - MG (for anti infantry support) OR a rakketenwaffer
Mid pioneer panzerfaust upgrade - Mechanized Regiment HQ - luchs
Late Schwerer Panzer Headquarters - 1/2 obers (either mg 42 or stg with infra) - either jagd or panther if i can afford it

and assistance would be appreciated since on several occations i really wanted to give up on multi since i cant seem to understand what i should do to improve