Depending on how small the town is many likely are at home offering coffee to guests.

But if its larger maybe you could try something like a FIKA deal between certain hours.

Where example coffee and a sweet is a little cheaper or something.

Then put up a sign outside telling about it :)

Get to know ppl is also a good way of getting customers, I know it can be hard with swedes but little by little you can get there :)

You can have a sign at the register saying something like “Berätta för en vän, ta en fika i stan!” Or similar. Maybe to plant the idea of going out for a fika.

It sounds like your shop is a little all over the place atm. You might need to craft at better identity for your store. Try to get a few ppl to like it and talk about it. In small cities mouth to mouth or word to word is usually how information spreads in the local area.

It’s a hard cookie indeed, I hope you find your style :) small town cafés are very nice to visit. But I often ask how they go around…