Hmm... Maybe try going into the settings and turn up the refresh rate on the device?

Our eyes can see almost infinite frames per second, so sometimes motion sickness can come about by seeing something that our brain considers choppy and slow.

The Quest 2 I think is set to 72hz by default, but can go as high as 120hz, with most games hitting the 90fps at most. Might be worth seeing if that helps!

Otherwise, some people are just prone to motion sickness a bit more than others sadly, and often times it just means limiting yourself to the games that do work for you.

If you do some googling for "SideQuest", there's a site that lets indie developers post their in-development games, usually for free. Follow their instructions for how to put their sidequest app onto your device, and then you can download a ton of cool things.

I mainly mention this because I just recently tried duck hunt in VR and had a blast. It's stationary other than just turning your head and body, and was actually super fun.