If that’s the only problem then I’d play with bars and stem. A lot of the newer bikes have actually got quite low bars as things go longer and lower / slacker.
My first change would be a handlebar with more rise – yours is almost flat by the sound of it. It’s quite cheap to try something with more rise and that may solve the problem.
With width you’ve got a decent width bar – I’m on a 760 but previously had a 780. I find it easier through trees than the 780 but for some reason it’s not quite as comfy for me. I think it’s got less Sweep than my last bar and think that could be the difference.
You could try one of these for more height whilst also on a budget – also gets you a bit more width:
https://www.planetx.co.uk/i/q/HBEGLS/el-guapo-saloon-riser-handlebar
Note the 35mm bar clamp size is £13 but if you’ve got 31.8 it’s £29.99 which isn’t quite so cheap.
Edit – for £13 I’ve decided to buy one and see if it’s more comfy with the wider bar and more Sweep!