Hello so first I liked how you tried to make plays, you made flanks and generally did the right things. The problem i think is your lack of experience. By that i mean that you did the right things and build the right things but in the wrong order or at the wrong times.
As you said the start went well for you, partly because of that luck sniper wipe.
In my view you probably should have had the AT nades on your cons up sooner as a precaution against an early scout car.
You were often pushing too aggressively with your cons and bleeding really heavily because of it. You have the sniper; let him do the work and use the cons to protect the sniper.
The Push with the T-70 was somewhat disasterous. Better would have been to use the T-70 on the flanks to make sure you keep them! IIRC you ignored the Gren that was there and got fausted. Dont focus too much on the tanks and ignore the infantry!
When you had the AT nades and the T-70 you then also got PTRS's on the penals, i think this was over kill. After the t-70 died THEN would have been the time for them. However, you then got an SU-76 which again nullifies the usefulness of the PTRS and just gimps the squad.
In my opinion the SU-76 was a mistake, the tanks you were up against were a scout car and a Puma. The Scoutcar alone isn't worth investing in a SU-76 for, and the puma just kinda counters the '76. It would have been better so save for a t-34.
Why did you get a second Engineer? Why equip it with a sweeper when you already have one? I get that you needed the repairs later on but get the engineer once you have the tank that needs the repairs not before
Its like buying a car before you can drive
The doctrine choice was strange, shocks are useless on that map and you had pretty equal fuel control. You didn't need to go for call-ins. Better i think would have been a doctrine that gave you better indirect fire and/or mg's.
The death of the sniper was sloppy but even so, once it died you should have replaced it, or gotten some maxims. Cons (new ones at that) don't cut it against vetted LMG grens and MG42's.
You needed the mortar much sooner, or if you had teched to T4 sooner you could have skipped the mortar and gotten the Katty.
He had a very strong central position, flanking it is good and thats what you did but, you flanked too deep with one squad. That just results in a lost squad. If you cant take the middle take the sides. If you cant take the sides take ONE side. Push in with a larger force from a flank slowly. Make him move his position and then move up again from a different angle.
Too aggresive with the IS2 sometimes, you got very lucky that the tank didnt get fausted and killed at the 30 min mark.
i liked the Use of smoke, nice nice.
When you sent the IS2 to the right, you signed your death warrant. He then knows the centre isnt defended and can move up. When he moved up he could then force you to fight him on his terms.
Overall I think you need to slow down a little and think about whats going on and just how you should defeat what you are facing. This is something i still don't do right.
Identify what the enemy is doing, think about how you can/should fight it, make a plan. Follow it.
I hope this help!
Goodluck!