yeah, it's kind of impossible if not absurdly difficult and jarringly unintuitive under physicalist assumptions. fortunately, the scientific theories are metaphysically neutral, so it's open for alternative interpretations, such as analytic idealism!

basically, physicality is the appearance of mental processes from across the private conscious pov. like the dashboard of dials on a plane, which definitely display measurements of an external world, physical properties represent the external world, which is not physical, but mental. mental just means of the same kind that consciousness is, which is all we ever directly know.

this doesn't explain mind in terms of an other existent, but takes mind as the reductive base, exactly like physicalism doesn't explain 'the physical', but takes that as the reductive base. however, while 'physicality' is a perfectly transcendental, non-mental existent, which cannot be experienced and is a metaphysical postulate, not an empirical observation, consciousness, mental processes, experientiality is the only given of nature which we directly and most intimately know.