My thoughts in roughly chronological order:
i have no idea why you spent the time in the beginning putting down wire there; i understand the concept but that particular location seems like it would hurt you more than help you.
you probably could have pressure the sniper more early on but that can be a difficult call as you don't want to over extend.
you should not have bought that rak. i realize you were probably hedging your bets and you could tell they went t1 but you also saw the sniper and a sniper generally excludes a car. if they did get a car you could have dealt with it through a kubel paired with other units, a careful blob of volks, or bought a rak then.
you never bought sweepers on your spios, even after you ran into a mine.
you also never placed any mines. the su-chu/tm-35 are the best mines in the game and they're easy to spam.
you didn't pressure much with the lusch. i suspect that you were being careful but you could have wiped the snipers in their base easily and you knew they didn't have any zis in the immediate area because you weren't being shot at. once you do get shot at you need to leave, of course.
you also put your flak down in your base, which is fine, but you didn't even put it on the front end of your base, from where it could have defended everything else much easier.
you also had some map control issues, particularly early on, where you completely ignored some areas of the map for extended areas of time, not even scouting to see what was there.
the lusch spent a lot of time doing not much. ended up dieing to carelessness that, if avoided, probably could have won you the game right there.
the V was a good choice, although you didn't need to get so close to the kv-8 and could have avoided engine damage.
you got a second rak, while having the first one (which you hadn't done anything with to that poitnt) and a V. you didn't need either.
no idea what you were doing with the V when it died but i suspect relic's shitty-pathing(tm) was involved.
at least you got rid of the raks.
the ostwind was a dangerous choice with the kv-8 still on the field; a puma would have let you pressure the kv-8 some and prevented it from base rushing you again.
immediately picking up that schreck was a very good move. losing the volks sucked though, even in exchange for the shocks.
you bought more raks instead of just recrewing...
ost was lost to carelessness.
your V should have been in the back for repairs long before it got that low on health.
overall you did much better than your opponent; i could have given him tons of advice. it wasn't so much a comeback on your part as a game protracted by mistakes. the two mistakes you made, that would have ended the game much, much sooner, was the loss of the first lusch and the loss of the first V. if you had avoided either of those the game would have been over 20 or 30 minutes earlier.