Robbed at the Botanique park

Me and my friend went for a walk yesterday, decided to go through the park where we ran into 5 gypsy looking guys that took our phones and also punched me in the face a couple of times. We did a report and stuff, however I am not sure if the police will do anything. Looks like my phone has not been reset yet, as I can still track its location, and I am not sure what should I do, or even should I do anything at all. (Ive put my phone in lost mode ofc). I can see those pricks trying to sell it somewhere in Ixelles, well, good luck with that - my phone is kinda bad. I was sending a couple of emails yesterday as robbers were right next to the nord police station, no response yet, so I doubt that if I would come to the police office with my laptop now we would go for a ride trying to catch them. I do not want my phone back that desperately, however, I would be very happy if those guys will get arrested.

Also, as I am already posting and need a new phone, might ask for an advice here as well. Im looking at this website https://swappie.com/be-en/ and its looks hella nice with those prices and a 2-year warranty. Maybe someone has used it before and its not as good as it seems, would love to hear anything about it.

I would appreciate any advice, hope you having a great day!