The raw file is before you did anything to it, right? You have an odd collection of problems, but I think the first and most serious one is you’re not loud enough.
Your voice looks like this on the timeline.
It’s supposed to look more like this (approximately).
Your voice is an easy four times quieter than it needs to be.
Describe your microphone and the room. There are some tricks to get microphones to behave.
Some USB interfaces have volume indicators and they can get you in the ballpark quickly. One microphone interface has volume knobs that turn colors. It’s green when it’s happy.
There is one popular microphone that only recently told you in the instructions where the front was. It’s directional, so if you don’t hit it, your voice volume is reduced and can sound odd.
Pc noise now.
Those are not good English words. Can you tell the computer is on in the room just by listening? That’s not good news. The ACX specification for background noise is -60dB. In plain words, the background has to be 1000 times quieter than your voice. That’s not easy. If you can sit there quietly with a cup of coffee and identify sounds (refrigerator, traffic), that may not be a good room for recording.
Do you use any soundproofing? We publish plans for a “kitchen table sound studio.”
Koz