[Build Help] Need help picking out a chair.

Hola, people of r/buildapc. Within the last 6 months, I have built my first computer, and have been using it for gaming ever since. It has been absolutely fantastic. However, I'm faced with a bit of an issue. I've been using a desk chair that I bought for $5 at a thrift shop as the seat for my "battlestation," and it's frankly one of the least comfortable desk chairs I've ever sat in. For shorter (~1hr) sessions, it's not absolutely awful, but it lacks the back support that I want to get out of a chair, and it often leaves me with a sore back after sitting in it for more than a couple hours. (Also, one of the armrests is falling apart and is quite literally being held together by a sock.) If I were to buy myself a good chair, where would I start looking? I'm not looking to spend more than $100-150 on a chair, although to be honest I have no idea how much it costs to get something that's truly comfortable to sit in. I don't mind buying used either, but I don't really know what I'm looking for. Are there particular brands or styles I should look for? Specific materials? Educate me, reddit!