Website advice and SEO

I am an artist (video, performance, painting/drawing) I have a website on squarespace platform and I have developed it myself so far. I like the way it is organised in some ways, but I want to also sell some services and products. I need advice on how to make the website more accessible or organised in a way that will bring people in...I am not an expert. And I also need advice and help with SEO or keywords or whatever it is that brings people to my site or make it show up in searches or whatever. I know some keywords or terms I would use but I would also like advice. In short, I have things to sell along with displaying my art and videos, So I need some advice about how get it to make some money, not much but some!

The price per hour I have put is negotiable but I am working to smallish budget

(P.S. Anyone who knows anything about Shamanism, fortune telling, expressionist art etc, that is the kind of thing my art is about.)