Advice for commuting vehicles

Hello dear forum, I am currently looking for a new car and am no longer looking through. Our current Farzeug situation: Now the Fiesta is to be replaced, because it is only a 2-door and we receive new children again. Bringing two children back on the bench is very annoying in the long run. Therefore a 5-door should be purchased. Requirements: The Avensis was only purchased a month ago, because our focus had suffered a motor damage. The question now is, whether we only buy another small car, or soon sell the Avensis again, because the consumption is too high for us in the long run. In addition, the question arises which car is more suitable for which route (2x32km federal road or 2x8km city traffic). In my search, I then became aware of a Toyota Prius and find out which car is more suitable for which route (2x32km federal road or 2x8km city traffic). our budget is about 8-9000€, we would not like to finance a new car/annual car, unless this would be calculated in comparison to the used car. We plan to drive the car for a very long time. Or a whole corner cheaper and also smaller: Here the question arises, whether the more expensive Prius is worthwhile for our driving profile, or whether we should distance ourselves from it and rather a cheaper small car around 4000 I also find the Skoda Fabia or a Roomster, which could possibly replace the Avensis later on. Otherwise, hints and suggestions are welcome. You see, this is still a bit unstructured. Thank you for your help, Alex.