I am using the Downix big and tall gaming chair it’s extremely comfortable and I’ve used it for years. I think they’re about 180 bucks on Amazon.
As an alternative my brother is using a gaming chair he bought at Costco pretty recently and his was like 150. He loves it so if you have a Costco near you you can check there. The best part is they had it on the floor so you could sit in it prior.
Edit: just found out someone on my btag is using also Downix. It’s $110 at the time of typing this and he loves it also. I can personally recommend it cuz I was using a similar one before I got this one I’m on my second downix chair.
amazn.so/OZgsIIv