Which drive to choose? Medium class, 20k €, in the country

Hello together, we would like to replace our “old”, VW Passat Diesel 250tkm. Since the children now have their own cars we thought of a number smaller, i.e. about the “golf class”. At the moment, however, I already fail to drive. What is currently cheap and will also be cheap and still be allowed in the future? Petrol, diesel, hybrid, gas? An electric car is not mine, I could imagine a hybrid just now. (There are almost no charging stations here, also not at my We live in the countryside and drive short distances here, 2 times a week I drive about 170km and once a month about 700km. Which drive (except electric) would you recommend to me and why? Best regards, Joachim