I feel like it actively forces me to hunch over constantly. My shoulders already have a slight tendency to round and this chair does NOT help. Any recommendations for cushions or whatnot that would help? Or a not insanely expensive ergonomic chair? I've also seen this halter you can wear that pulls your shoulders back.

Obviously a lumbar kitty would be the best.

I do have a lot of stretches and Theraband exercises that I do at home to try to counteract this, but I sit in my chair for like ~8 hours a day so I don't think it's enough.