Well, I will take "It sounds like me" as a joke "complaint", Oliver.  Your playing has a distinct style and sound to it, and that is a *good* thing.  There's far worse things to hear in a day than a bit of Oliver's playing.

Now about noise when recording.  First off, some noise can be good, at least a little of it.  Without a little bit of bow/string sound, there would be nothing to let a listener know that they are hearing a real person playing a violin.  I didn't really notice anything bad in that regard when giving the tracks a listen as a listener.  I thought the playing sounded pretty good, personally. 

There is some room/environment noise though. One can fix that in a couple of different ways.  One is to only record in a really really quiet room.  But with air conditioning, central heating and so on, that isn't real practical all the time, especially not when just doing a quick "take".

Noise removal in Audacity isn't hard.  You need a few seconds on the track where you aren't playing and so it is just recording the background noise like fan, breeze, etc.  That ten seconds of "blank" space I recommend at the beginning of a take will usually have a few seconds of that kind of (non) silence.   Use your mouse to highlight that time where all you were recording was basically the room noise.  Then go to "effect".. "noise removal".. and you'll see something like "get noise profile".  Click that.  Then rewind to the beginning of the track.  Click "effect" "noise removal" again.  This time, you can click "ok" under "section 2".

What that does is "get noise profile" gives the computer a sample of what you want taken out of the recording.  "Ok" tells it to go ahead and remove that from the track.  Then it "automagically" goes through and takes out the part of the sound that sounds like the noise sample you let it profile..

The default settings are pretty good for most things, and usually will be enough. 

BUT.. the added little plus.. Is that since some of the bow/string noise will be kinda similar to air/fan noise, it will get reduced a bit as well, though not completely eliminated.  It will take some of the harshness off it.

The result is the track will sound much cleaner, and so the sound of your instrument will come through clearer

It isn't perfect, but I think it will fix some of what you are not liking.  The noise removal in Audacity is actually pretty good.  *Really* good for a piece of free software, in fact.