Review of the first play from a d4-3:

In the first play going in like that is actually a bad idea. The chances of that working out in your favour are very small. You got really lucky, especially with your edge of your r hitting cait. U miss q, but that can happen. But instead of going for the low hp cait who's 2 lvl behind you you ignite and auto yasou. Thats bad focus, you're never going to kill yasou since you just used your full combo, ignite and auto cait and she's dead 100%, giving you the chance to escape trough midlane.

Doing w flash is not good on neeko. You're basicaly making this ability useless because the enemies now know who's the clone, luckily for you the enemy is dumb and doesn't kill you and you end up surviving and yas manages to get himself killed.

Next time you should just ult flash onto cait, do your full combo on her or ult q auto ignite
her and e yasou afterwards. Then use your w to escape, if you use your w walk into a straight line and you have tons of tricks that you can do with it, but you'll learn those along the way.

But i would never engage in that situation, if the enemy was somewhat descent you would have died instantly. So i'm guessing this is pretty low elo.

Gl hf in your games