I am doing immersion with Hololive and I often hear these things like when they use something like あのさ、OO or なんかさ、OO. What does it mean? How do I use it at an appropriate time during causal sppech where it makes sense. And for my second question, I have also often heard だいぶ and けっこう rather often through my own personal experiece and what is the diffrence or I guess I should say, the nuance? 皆さん、教えてください。
