Getting an active sitting chair is great if you fidget too. I bought an Ariel from https://qor360.com/ at the begging of the pandemic and I love it. It's an unstable stool so your body can always be in motion. Office chairs had always given me back pain but it went away with this chair (+yoga and a better mattress).
The seat is very firm, however. It took a while to adjust to.
The seat is very firm, however. It took a while to adjust to.