I recommend Lumix G series, like DMC-G5 even. And if you want a small pocket, it is also a mirrorless Lumix DMC-GF7. In both cases, interchangeable optics, lenses with an adapter of PLN 100, a whole range of lenses of all kinds, unless they have to be Panaconic, then a kit plus something longer. But think about what you care about the most and adjust the equipment to your needs, and you will not buy something just in case, just to have it. Because you will never get it out of the case. I know people who have big SLRs and lenses, 20,000 PLN, and the pictures are taken in small mirrorless cameras. I also have a reflex camera and I almost always use GF7 with 12-32 glass and a second 35-100 glass. And for the G5 there was kit 14-42, there were also shop sets with two glasses, 14-42 plus 45-150. But what is important, whenever you choose any company used, always check the counter of photos taken. Not the meter in the camera current, under the picture, but this one cannot be deleted in the service menu, etc. Although there are also methods of resetting, unfortunately, but at least there is hope. And the condition of the camera will be judged by its appearance, as it will have 80,000 taken, up to 15 pictures on the counter, you will know by the worn, slid housing, by this and by that. It's like a car, on a 12,000 km counter because he only went to church once a month, because he has little faith, and the steering wheel, pedals worn off, the gear knob is polished. That's why they change these parts to new or slightly used ones to cheat. With cameras similarly.