I use a cherry tree office chair for gaming and since march work from home. Its arms are raised so i frequently sit cross legged with my legs below them. Quite comfortable to do so.
https://www.amazon.co.uk/dp/B00K5SD3DS/ref=cm_sw_r_cp_apa_i_OnIFFbQGR9XDA £79
There's a lot on Amazon in this price range but I found this one to be the best
https://www.amazon.co.uk/Executive-Recline-Padded-Office-Standard/dp/B00K5SD3DS
I use this, I can and do sit in it all day and never get uncomfortable.
I bought this on Amazon a while ago, this chair has been fantastic for me - https://www.amazon.co.uk/gp/product/B00K5SD3DS/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
like 4/5 suggested this chair so far , so looks like ill take a trip to Ikea and sit on it before i buy anything else.
I dont have a Ikea in my area though which is a issue.
Otherwise will just buy one of these
https://www.amazon.co.uk/dp/B00K5SD3DS/ref=psdc_9469080031_t1_B07448ZDP4?th=1 https://www.amazon.co.uk/dp/B07448ZDP4/ref=sspa_dk_detail_2?psc=1
https://www.amazon.co.uk/dp/B00K5SD3DS/ref=psdc_9469080031_t1_B07448ZDP4?th=1 https://www.amazon.co.uk/dp/B07448ZDP4/ref=sspa_dk_detail_2?psc=1
thoughts on these? they are quite cheap but have decent reviews.
Also this one is gaming as well but the £69 one looks more comfy.