Soon 18 and First Car Purchase

Hello motor friends, I have registered here today on your forum because I find the information about different cars very informative. I am not such a big car connoisseur, but it is time to look more closely into the matter so that I do not do anything wrong with my first car purchase. Well then: -My budget that is available to me will probably be 3000-500€. -And the car should be cheap in insurance and consumption. -min. 4/5 sitting I play with the thought of a Lupo but not to bring one under 75 ps, have thought so of the 1.4 16V also 1.6. GTI would definitely be too expensive. Which car would you recommend otherwise, what comes into question with the above criteria? Thank you for your answers, in advance