Need new car with large trunk

Hi guys, I’m currently looking for a second car or a car for my mother. I’m currently driving a Golf 7 Varriant, my mother an A3. The reason for the purchase is that I now have 2 (big) dogs and I don’t fit two dog boxes in my Golf 7. And a third dog should still be here. I don’t know which direction to go at the moment. One way would be to go to Dacia, as a doctor or Duster. Would cost me about 15k al However, also somehow with zero equipment. An alternative would be to take a caddy or a multivan, possibly as a used car. Or also some caddy type semi-box car from a third-party manufacturer, such as Citroen, Peugeot, etc. What makes more sense? My problem is quite honest that I come from an absolute comfort vehicle, 140hp, DSG, ACC, lane holding assistant, automatic parking, light and rain sensor, Keyless, etc.