Not all ANC is created equal and it's not uncommon to feel the pressure of the negative sound that is actively cancelling the outside world. I've had a few headphones where this has bothered me (never used the Buds2), but many others where it is fine. For example, AirPods Pro 2 do not induce the negative pressure effect for me at all, but a previous pair of Beats Studio's made me uncomfortable after a while (or if I had music paused for a period of time with ANC active).

You could be extra sensitive to the effect, you may acclimatise to it over time, but I would also suggest you try some other ANC headsets / earbuds if you can - that might give you a clue as to your personal level of sensitivity.