I used some free-to-use sound samples that I found online for my game. I also have a couple of composer friends.
You should outsource what you're not good at; or just play to your strengths. I actually liked the sound effects that you included in the game. Adds to the aesthetic :)
I'm trying to build everything up to train a little bit and get out of my confort zone, a lot of my last projects was made with pre made gfx. I mean dont get me wrong, I have the "Dont reinvent the wheel" on my bones, but I was too confortable. Hope my next projects will receive the fruits from this training