Had some company come over a bit early, so was a bit rushed. The NW front can probably cover for the North front, freeing that up to shift down, etc.
For this screen shot, I would point out the Italian and Rumanian units on the south side (orange line). They generally suck, especially if they are not dug in. If you want to take some risk, you can probably do some deliberate attacks down there and see about pinching the bulge out or at least slowing down how many units he can funnel through the break through. Might be a bit tough to see, but he has a motorized division all by itself surrounded on 4 sides by Russian units. Should absolutely stack some units there and launch a deliberate attack and then take the hex with a unit. Will give you at least 1 more hex he has to take in order to close the noose and also inflict some damage on his motorized units.
The light blue brushed areas represent areas you need to look at flipping as many of those hexes back to your control and hug him as tight as you can to make it tougher for him to move additional troops and also make his spearhead do a lot of work to get anyplace. His logistics are not that hot with a drive like that and it won't take a lot to run them out of supplies. You need to keep moving troops out as you can to the NE to save as much as you can. The Germans can't beat you if they don't destroy your units. Troop and tank losses to you don't really matter, it is losing the counters that matter.
From what I have seen of your AAR's, just about everything is up in the line. You can't do that as a Russian and expect to survive IMO. These can start being formed in 1941, especially in the fall. They are an absolute must in 1942 where the Germans are still relatively strong and will cause issues. When the Germans get committed in a large way to some place, you can send in your reserves to help slow down the Germans and also help counter attack. Reserves are generally a combination of some of your best troops under your best leaders (fire brigade) along with units you are refitting (new units you may have built and newly assembled tank corps for example that are not yet ready for combat). 1942 is sort of like fishing with light tackle and having a big fish on the end of the line. The Germans are going to run wild at times and you have to run the drag, but eventually you can let the Germans wear themselves out and then reel them in.