Don't let the bouncing and lack of firmness become something normal - that's exactly what shock absorbers tell you when they're on the verge of collapse! What the guys aren't mentioning is that ignoring these symptoms can damage your whole suspension, alignment, and even brakes, so get to a mechanic now and have them check it on the lift, don't wait around for mileage numbers.
With your 2019 Golf and "quite a few" km racked up, you probably already need to replace them if you're noticing something that obvious. Shock absorbers aren't something you save money on by waiting - it's your safety and the safety of whoever's riding with you!