My native language is Korean. For me, the French R is too hard to pronounce.
It seems the only uvular consonants that I can easily pronounce are stops, e.g. [q], [ɢ], and [ɴ]. Yet French R is not a stop.
For [ʁ], it's quite hard to place my tongue to make this approximant. It doesn't make a complete oral cavity like a stop, yet it constricts the airflow unlike a vowel. I can't easily match this intermediacy.
For [ʀ], I seem to be impossible to make this trill. Whenever I try to pronounce this, epiglottal [ʢ] is made instead.
Yet for strange reasons, it's quite easy to pronounce pharyngeal consonants. So I wonder if a native French would understand my pronunciation if I pronounced the French R as [ʕ]. Would they?