Lovemusic Watching your post with interest as I am in the process of trying to open a shop on Etsy (not until around Sept 2021).
I am approaching it as a hobby which might make a small amount. There is an Etsy forum on the web...you might get some answers on there. Otherwise, you might want to re-post in chat where there is more traffic.
I have an etsy store and a product which I also sell locally. I made £340 last month but it's not a full time thing for me, just a hobby. I think if you're passionate about it and you really want to make it a success you can but it's likely lots of hours.
As far as I can see the Etsy algorithm favours large product ranges so they encourage as many items as possible, that's not good for me as my stuff is a very small collection.
They have a detailed handbook advising on the SEO etc so worth reading that.