Kia Xceed spongy/”direct outbursts” from about 110km/h

Hello, I have a Kia Xceed 1.4L 140Ps BJ.2020 with 25 000km. I noticed when I had a longer motorway yesterday, which my Xceed almost permanently “breaks out” to the right us left and I always have to keep it active by correcting in the track which is sometimes almost dangerous, especially if you are currently driving past a truck and he suddenly steers out of nowhere to the right.(Of course not so much that he changes the track directly, but if I don’t correct w This also happens on the straight line, but sometimes he runs straight out normally, probably depending on the nature of the road. Otherwise I drive more urban traffic and on the expressway up to 100km/h where he has already spongy felt to me, but not to the extent. I looked yesterday on the internet a little bit if I find something about what this can be and I think that it is due to the track/sturz setting that he is strongly on road uneven This is not the case, but I do not think that there are any faults in braking. Would you confirm that, or would you like to be able to do so? at someone another idea about what this can be? As well as what an axle measurement with track/sturz setting costs ca? Of course, I will soon be able to pass by my workshop.