Back in Poland on a budget – Gdańsk, Malbork, Toruń, Łódź, Wrocław. Advice?

I visited Poland last year and was genuinely blown away. I went to Warsaw (9/10), Częstochowa (8/10), Zakopane (3/10), Kraków (6/10), and Poznań (7/10).

I’m heading back in a week on a budget trip and will be staying in Gdańsk (planning a day trip to Hel), plus visiting Malbork, Toruń, Łódź, and Wrocław. I’ll be travelling between places by train.

The main focus of the trip is Polish food, visiting churches, and experiencing Polish culture without spending too much.

How do these places compare to the ones I’ve already been to? Any must-see spots, budget food recommendations, or general travel tips would be really appreciated.