Greetings Lux,
What type of mic are you using? It kinda sounds like you have the mic to close or it is turned up to high
I use a Logitech G230 and it works well it was about $30
About your channel, nice content, here are a few pointers.
First thing I would do is turn on Customize Layout, if it is not turned on.
On you channels home page click the cog next to the subscribe button, make sure Customize the layout of your channel is turned on.
Start consistently using custom thumbnails and put your logo in one of the corners for brand recognition.
Create playlist to categorize your videos.
I would add some more tags example, ta;l about freedom video
you were playing overwatch, I would tag the character you were playing which system you were playing on etc
Fill out more of the about section your social media links your twitch link etc
Download TubeBuddy, even the free version helps out a lot, especially find good tags.
I subscribed to your channel Good luck and see you around YouTube.