Hi Maciej, I love your shop. Your items are amazing! And photography is really good. :) The one thing I'd suggest from a cursory glance is to put the main search term first in the the title. So for example for the toy cars, put "Toy Car" first, followed by what kind of car it is.
I read somewhere that for online shops you should expect at least 100 views for each sale, but I have a lot fewer sales than that. I really need to work on my photography though, so I don't know if I'm a fair comparison. :) Either way, you'll have a lot of views from people who are just browsing, or who thought your stuff looked nice but don't have the money to spare, or a lot of things like that.
If you haven't already, I'd encourage you to join more teams on Etsy. A lot of them have really helpful advice, and are a lot more active than this one. Sometimes it's a way to get sales as well.
Best of luck. :)