i don't have any exact recommendations but i have a few rules of thumb when it comes to chairs that i like to use that you might find helpful.
- i always think it's a good idea to invest more money into a chair that you will spend a lot of time sitting on, the more time you will spend the more a chair's flaws will be apparent
- the more adjustments you can get, the better. many chairs have just a lift and maybe back adjust but arm rest, lumbar, seat position and other adjustments are more than welcome. the right adjustments can make things more comfortable in general
- buy used/refurbished if you can, preferably from office space clearance or refurbishing companies. not only will you save money and reduce waste but companies that have office space need good chairs, and anyone reasonable who runs a manned office space knows to give their workers quality equipment so they don't constantly complain about it. they have an incentive to invest in good chairs (generally, not always true)
- "gaming" chairs (you'll find them everywhere online these days) are usually poorly designed, usually more for looks than practicality and have "bucket seat" designs -- good for cars so you don't slip when accelerating, less so for office-style chairs. as a general rule it's best to avoid those
i think for your case you might want to look for a chair that doesn't have arm rests or has the ability to remove them as that will save you some horizontal space if that's what you're lacking.
i'm not sure how small your space is, but my chair just about fits in the area i have it in my bedroom of 60x80cm. i bought a refurb steelcase leap v1 a few years ago and it's worked well for me, though the arm rests have worn a bit with time. the main problem with it is that it's really hard to move because the base is a huge chunk of steel or something close to that heh. it's really heavy but that has it's upsides and downsides depending on how much you want to move around in it.