Hey man! Welcome to Coh2.org!! I hope you are liking the site so far!
Now i read what you have to say and had a look at your playercard as well. I don't mean to be dismissive or dissuade you in anyway but I'm not going to watch the replay. One of the other strategists might be happy to do so though! I just felt you should have a response if not a full review.
I wanted reassure you that losing 4 games in a row is nothing unusual, particularly if you are just starting out, there is a lot of learn!
We have some guides here:
https://www.coh2.org/guides/categories
So that new players can read this stuff and get a basic idea of what they should be doing and building.
As for recommendations: just keep playing man, at least finish those placement games (you need to play 10 games before you get ranked) once you get ranked you then get matched against opponents more at your skill level.
I see that your soviets is ranked at around 800 so you must be pretty okay!
Hope this helps!