Free will has too exist in anybody with more than 1 dimension to their personality. There's too much there to just be a random process. I'm a painter dude. I did a massive (unfinished due to lack of foid depression and despair) painting of Hades and Persephone which I'll post below. It's 5x6 feet and I did it at 19, and I started art at 18. If free will doesn't exist, that means it was just a random coalescence of physics that created that painting (and it wasn't over 1 billion years through evolution or anything, but a random happening from one organism). Also, we experience free will, therefore free will exists. Those who run the dark side of the world want us believing in absolute nihilism because they are shitscum.
You don't seem to understand what determinism is.
Determinism doesn't imply a "random process", quite the contrary.
Good art though, but it has nothing to do with free-will.
You can see things from two levels horizons, both are correct, they are just different levels, for instance let's take love, you can talk about it from an internal, subjective first person qualitative point of view and say "love makes me feel this, and that, it goes with caring/affection/desire" and you can also talk about it from another point of view "a chemical process" one doesn't contradict the other.
Same apply for art, the fact that there is no free-will doesn't mean that you don't navigate extremely cloudy and thorny profound mental areas to "get your inspiration" or that you don't feel beauty and intensity when you do art, you seems to misunderstand what determinism implies.
"We experience free-will therefore free-will exist" is a bad argument. Not only it's false (we experience the impression of free-will, not free-will) but it would imply that hallucinating a ghost implies a ghost exist, feeling you are falling from your bed while you dream implies you are falling, feeling faith implies god exist etc. Philosophically that's a ridiculous argument.