Well, advice breaks up into two parts, anti-taki and Voldo. I think the first is actually more relevant to your difficulties in that match, but I'll mostly talk about the latter since that will help you more generally. Some big things anti taki: if she goes into hover and you didn't try to hit her (i.e. you are just blocking), step or hop back and she will whiff giving you a free combo. Also, PO K is a frame trap, taki is neutral or positive after that. After you block PO K you basically have to keep blocking, or maybe GI. Also, watch out anytime taki is crouched and at minor disadvantage (i.e. after hover B on block, after a chip low), her WR K is very fast and leads to some good combos. So in those cases just go for BB and nothing fancier.
As far as Voldo stuff goes: you used a lot of nyeh moves far too often. in SC4, more often that not less is more, i.e. better off using a smaller number of a character's more powerful moves than the whole moveset. Randomly throwing out 44[K] as often as you do, CR A, MCFT B/A, BS 2B+K (too often outside combos), these aren't good. I would first simplifying your Voldo, stick to his main moves which have specific purposes and be clear on why you are using each one. Then you can bring back more variety when you understand better what their purpose is. I.e. 44[k] isn't a move to be spammed, it's good evasively when your opponent is about to attack and fairly close to you (so you end up behind them after they whiff).
In terms of specifics, i would say use more 2A+B. Always do 2A+B236, even if you plan to block after, it recovers faster. Usually though you should use CR B/K/A+B after 2A+B unless you are playing someone who is bunkering down. Always use 2A+B236 B/K when you are facing forward and they are on the ground, it's your best option. A few times I saw you just do 236 B when they were grounded, this is worse in general. Don't use so much 3BB, I know it's easy but it's not very safe, not very fast, can be GIed in between... Instead use 1[K], 2B+K, K. This is a very easy combo that does good damage, 1[K] is safe and puts you in blind stance at moderate disadvantage from where you can try a BS A+B (parries a lot of stuff) or BS 1A (crouches under a lot of stuff). Normal stance A+B is also excellent, very safe mid with good gauge damage leads to great combos. Work on hitting 66B and 66:B, its important for combos and punishment. Good use of BS 1A in one of those matches, it's a good mixup tool. A great way to shift into BS is with normal stance 4A, this move is neutral on block. Most people don't realize this and will attack after, so I recommend 4A ~ BS AA which will stuff most things. 6BB is also great as an interrupt and way to get into BS, it's tied for his fastest move from standing. 2A is also very important for Voldo because of his lack of fast moves. AA and BB and grabs are key as always. In blind stance, you can mix up BS 1A with 3B or 22B or 66B.
A comment not related to which moves you used: you whiffed a lot. Whiffing is really bad, you can eat a lot of damage for whiffing even something that seems pretty small. So don't just do moves you think probably won't even land on your opponent's guard. Sometimes you can anticipate that your opponent is about to run up to you and try to hit them coming in, but you were whiffing often.
I'd recommend reading some of the threads in here and in the general tactics section first, try to assimilate it, play some more, etc go back and forth. You can improve a lot by reading info that's already here without waiting for critiques of your game.
Oh PS nice in that one game, you hit A+B 66:B 1, that (well there should be an extra 66B after the A+B but whatever) is a pretty sweet combo.