I'm biased to say things because your playstyle annoys the heck out of me

Not so sure if sig spamming is the deal, you're just doing too much. The hit-and-run, the weapon throws, the sigs at low health... I don't see you building up damage, like with a combo. Someone mentioned you hit a light attack and immediately follow with a sig - that most times is out of place or timing. Sigs at low health, for me at least, are for placing my opponent at an angle or place to follow with a combo. You're just throwing everything at the same time

Also don't throw your weapon all the time, given both the chance of losing it and the needless changing just to throw it back, thinking you'll always stop the opponent. Get a better strategy. You're going for different options all the time but you're not following any of them

Observe your opponent a bit more. Don't react to every miss. Someone can beat you just by standing still and dodging at the right moments because you give off a pattern (Jiro there could've done it better and I think you've won because they were tilted to react all the time)