How do I get high quality audio

[wchap001]

is the interface the best way to go?

I currently have the blue yeti, which according to what I researched, it is the highest form of audio quality when it comes to direct connect on the PC.
here is a clip of a video no I am not promoting .... just so you can see what I sound like...and I am trying to get audio like the 2nd video. notice in the 2nd video
it has a much higher quality and crisp sound

 

[wchap001]

just trying to bump...hopefully someone has some knowledge and can compare the 2 audio to show what I mean. I am not sure if an audio interface is the way to go

 

[YouTube4x4]

I am not an expert on the subject, as a matter of fact audio is one of my weak spots in video production. But that difference in audio quality can probably be achieved with post production software alone. Premiere Pro, for instance, has basic settings that dramatically change the audio quality, especially in voice over narration.

 

[Momentum Productions]

I usually record audio separately into an audio recorder. The Zoom H6 with a Rode NTG2 hooked up to it. I get the crispiest audio this way and I sync up the sound to video in post.