Funny taxi drivers

Yesterday I had a very strange taxi driver from the airport to my home again. Stand next to his taxi and chatted with a colleague. I only had hand luggage and I meant to take it on the back seat when he was on his way to the trunk. So I tell him the destination (15€ driving) and he looks forward and shakes his head and stays in this position for 20 seconds. I wondered, he doesn’t even want to go off and at some point he did this too. And he puts such a belt dummy in his belt lock. The ride in itself was quite rough, as if he were gnatzig. Finally, he drives in on half a distance into a speed camera, I don’t know if it has flashed, but he has braked a group and then I see the mobile speed camera standing on the right. No comment on it from him (because I’m sorry for braking or something). At the finish I give him 16€ and let me issue the receipt, neither a thank you nor a goodbye from the F In hindsight, I got angry that I tipped him. The taxi was clean, it was well maintained and the receipt was clean and completely filled, but you can also be a bit friendly to customers, even if you have a bad day. Probably he had only short tours and for that he always stood at the airport for 3 hours but what can I do for it??? The taxi in the morning to the airport was a bit dirty inside (i.e. on the ground about sand etc. but the taxi driver was very friendly. I really prefer that, quite honestly.