Re: "All office chairs are gaming chairs"
Forget about those crappy gaming <insert anything vaguely computing related>.
For a proper office chair (also good for extended gaming sessions, if you have that sort of time to spare), get a HÅG Creed 6002.
Pricey but built to last, and at least you don't look like you're using your teenage kid's chair in Zoom^WTeams meetings.
My older model is well over 20 years old and still as comfy as ever.
Your back will thank you.