30mm is really short
I’m the opposite to you, long legs short body, so modern geometry is less suited to my body shape than i suspect to yours.
Ive played around a lot lately and gone back to a 70mm from a 50mm stem, at the same time increased the stack height, i had to get new forks with a longer steerer to do that. I suggest get a 50mm stem and see how you get on, also muck about with spacers. Renthal bars are available in different rises too, all of which can tweak the front end position.
Then theres angleset. I’d suggest 1 thing at a time to work out if its better or worse incrementally.
I’m not trying to sell my spare 50mm stems either. Pro FRS or Hope AM incidentally 😉