Profile of TotallyAwesome

The best commander right now is scavenge. Jaegar lighat infantry is great at long range, and the artillery can destroy any positiob. All of the commanders are pretty good, either way. Firestorm aND overwatch are a little weaker than the other commanders. Elite armored is better for team games. Breakthrough is also better in team games, since you need to save manpower for panzerfusiliers and the jagdtiger is better in team games.

THe most popular build, by far, is volks, kubel, volks, volks, tech. Sometimes you go for kubel and then 3x volks. If you don't have enough fuel to tech or don't plan on getting any tanks you can get a 4th volks. If you go mechanizex, get a luchs. If you go battlegroupe, you can get a flak half track if you want, but it is not necessary. After that, it really depends on how the game is going.

In the early-game, I generally cap some points with my sturms, and then attack the cutoff/fuel with a kubel while my volks capture my fuel point. The kubel attacks from long range, taking off health of enemy squads while the sturms kill the squad.

In the mid game I generally turtle until tanks, and only harass points and make safe attacks that are sure to be successful. If my opponent also turtles I save up fuel and maybe even get a kt, but this is rare. Normally I go for a panzer 4, and play very aggresive with it. The tanks you get really depend on the situation. For instance, if I am doing well I will get a flak panzer followed by a jagdpanzer. If the game is even I get a panzer 4, and if I am losing I get a puma or jagdpanzer.

In the lategamd, I may get a jagdtiger or kt depending on map. This is only if the game goes on for a long time, and a tiger is the only way to break my opponent. On narrow maps I get a jagdtiger, while on bigger maps or if I already chose a different doctrine I get a tiger. For example, on kohl done a jagdtiger DOMINATES the center, but on Faymonville I find a kt more useful.

The first think I noticed is you unusual capping order. Use you engineers to cap all of the points connecting you to your fuel. This gives you more resources, and playing on the right flank can be difficult as you will must likely be pushed back easily by a sturmpioneer and lose all of your territory there, before conscripts can support your engineer.
Another thing is that you need to get your fuel sooner. It took about 2:45 secs to get your fuel; this needs to be done much sooner.
Your build order is very unusual. 2 engineers, two conscripts, and a maxim? You can check out some good build orders here (https://www.coh2.org/news/57846/tournament-statistics-allied-meta). The most popular build order right now is 4 cons into medics. Because of this, your opponent's 3 volks and sturms pushed you back easily.
Another thing is that your opponent has a massive attack on your fuel around the 4 minute mark. This means there is very little guarding the opponent's fuel, so an engineer and a little bit of your army will cap a lot of his/her territory. HelpingHans has a video about 'game sense', which should help you (it helped me a lot). https://www.youtube.com/watch?v=FgJRFlzBMpo
Your t-70 timing was extremely late. A quick t-70 would have punished the early stuka, and if your t-70 snook behind and killed the stuka it would have been gg. The t-70 would also punish the luchs.
At 13:30, you should have made a push against your opponent. You need to be more aggressive. It's easy to say that when watching a replay, but it is very important to constantly attack. Even if you are pushed back, its better than your squads idling defending already secure points. Bring a maxim, a conscript, and a guards squad and you have a good chance of taking a lot of territory and doing tons of damage to your oppenent's economy.
Going for an su-76, in my opinion, was a very poor choice. Your oppenent is not going to have any serious armor soon; they just got a luchs and stuka. The su-76 barrage is not the big a deal when you have a mortar to attack enemy positions.
at 14:40, you see a flak halftrack. You NEED to attack it with the su-76. That would have been gg if you did that. When it's setting up, it is very vulnerable. Even if there is a raketen, you can back off. You are down in this game, so attacking there will turn the game completely around. It is worth the gamble that you lose the su-76.
At 19:00. You have two conscripts, and a mortar doing nothing. It is important to attack and defend your fuel. That was still a very good play, and I understnad you may be focused on killing the flak halftrasck.
Overall, your biggest mistake was the build order. You need more conscripts to get those victory points. Improving tht will vastly improve your game. That is just my opinion, but keep playing and you will get better. Your oppenent floated a massive amount of manpower. At one point in the end-game, he/she could have easily gotten 3 obersoldaten with lmgs, further punishing your lack of infantry.
As you said in your second post, coh2 stresses you out. Perhaps you should listen to music you like (if it doesn't distract you),and take a break after each game. Here is a link all about that. https://www.coh2.org/news/1670/the-winning-mentality

Just go for 4 cons -> then medics. Get at grenades or t2 depending on situation, and then get a t-70, or 2 depending on situation. On some maps it might be better to get quick t2 and maxim. The soviets dont really have solid build orders; you have to adapt.