Not bad…I don’t know how to play Lars and I only watched the first couple seconds of each Match.
Learn your punishers…go to TZ
Gotta learn to punish unsafe blocked moves (Feng match )…with universal basic moves.
There was a move Feng did at 0:18 and 1:08 and at 3:02, I believe it’s a d+4, 1+2.
You blocked the 1+2…because I don’t believe that string is a natural combo.
I have no idea what the frame data is on that …but judging from the visual cue, I’m 90 percent certain you get a guaranteed punish on it…if anything you get jabs (1,2) at the very least.
He did one of feng’s best moves b+1+2 I believe at 3:08, this is a quick shoulder check that is good for whiff punishes…on block, I’m pretty sure it’s unsafe…learn your punishers 
Speaking of jabs , use jabs and universal moves such as df+1, and df+4 to start your offense,
You use small pokes ( think light moves in sf) to start your offense , then bigger moves and 50/50s (high/low/throw) when you have frame advantage.
You rarely see throws at high level play but I believe it’s important in the early stages of tekken to attempt as it helps you put your offense together…however don’t make a habit of doing the long throw F+2+4…this is the one that has more range but it is very telegraphed.
Big moves and lows are rewarding but more risky.
You blocked Fengs db+3 around 0:37, im pretty sure you could follow up with a universal/ basic ws+4 (while standing , means you’re crouching and you let go of down to go to neutral while pressing a button ).
Most lows are punishable .
If you don’t know if it’s safe to attack but you want to attack, go for a d+1, this will go under their jabs…but you could get hop kicked.
Your sense of timing is not bad at all. You just need to acquire knowledge to make decisions 
I’m gonna give you homework and a drill to do: practice winning a match and doing 50 % of your damage using only basic moves…I don’t even play Lars but it doesn’t matter:
Here’s the list you can choose from:
1,2
df+1
throw (1+3 or 2+4)
db+4
df+4
d+4
d+1
ws+4
df+2
uf+4
uf+3.
The purpose of this exercise is to improve your fundamentals… a lot of tekken is understanding the other character you’re playing against. But if you have solid fundamentals, you don’t necessarily have to know everything about the other character.
The safest thing to do after being hit with an attack is to block.
There are generally 3 options after blocking an attack that is not punishable…
- continue blocking
- quick attack
- retreat/backdash/sidestep/sidewalk.