Gymnette, ideally you should learn to roll the R. It is hard even for Russian children:(

Learn to roll R or stay with French R.  English R is no closer than French one, but I believe French accent is better:)

Or also you also can approximate rolled R (<a href="https://en.wikipedia.org/wiki/Alveolar_trill" class="mw-redirect" title="Alveolar trill">alveolar trill</a>) with <a href="https://en.wikipedia.org/wiki/Alveolar_tap" class="mw-redirect" title="Alveolar tap">alveolar tap</a> .

Do not make the big deal of this. Russian is that language when natives hear that you're foreign anyway. So, don't concentrate too much on pronunciation. It's even sounds interesting and we like that. We find that person interesting and some kind of brave couse of their interest to that hard language. If u come here, some can copy your pronunciation and make laugh at you but it's mere the kind jokes, no offence. Good luck! Listen and speak more.
I can't purely pronounce R in my native language and there is no problem with that if you have physical issue or something.

The standard French r seems to be a voiced uvular fricative, which is too far from Russian. You could try with an uvular trill or an alveolar tap. And of course try to learn the alveolar trill, unless it actually is impossible for you.

And continuation of citaion above:
"...For example, [ʀ] was once typical of a <a href="https://en.wikipedia.org/wiki/Working_class" title="Working class">working class</a> <a href="https://en.wikipedia.org/wiki/Paris" title="Paris">Parisian</a> accent, while [r] is sometimes found in southern France, as well as (increasingly less) in North America."

In case you stay with French R (which means French accent)...

I can't roll R myself:) I use "uvular trill" for 'hard R' and (soft) alveolar tap for 'soft R'. Uvular trill occurs in French. I don't know... possibly Piaf has a trill?

When this trill is clear enough (and doesn't sound like 'kh' was admixed there) it sounds very similar to "alveolar trill" (rolled R). So many other Russians don't notice that I have uvular R. Besides such R sounds rather nice - I do not want to fix it. But:

- Uvular R  sounds far less Russian when it is fricative (not a trill).
- it becomes Much more noticeable when used instead of 'soft R'!

This passage form WIkipedia contains links to all kinds of R:

"The French rhotic has a wide range of realizations: both the <a href="https://en.wikipedia.org/wiki/Voiced_uvular_fricative" title="Voiced uvular fricative">voiced</a> [ʁ] and <a href="https://en.wikipedia.org/wiki/Voiceless_uvular_fricative" title="Voiceless uvular fricative">voiceless uvular fricatives</a> [χ] (the first of the two also realized as an <a href="https://en.wikipedia.org/wiki/Approximant_consonant" title="Approximant consonant">approximant</a>), the <a href="https://en.wikipedia.org/wiki/Uvular_trill" title="Uvular trill">uvular trill</a> [ʀ], the <a href="https://en.wikipedia.org/wiki/Alveolar_trill" class="mw-redirect" title="Alveolar trill">alveolar trill</a> [r], and the <a href="https://en.wikipedia.org/wiki/Alveolar_tap" class="mw-redirect" title="Alveolar tap">alveolar tap</a> [ɾ]. These are all recognized as the <a href="https://en.wikipedia.org/wiki/Phoneme" title="Phoneme">phoneme</a> /r/,<sup id="cite_ref-1" class="reference"><a href="https://en.wikipedia.org/wiki/Guttural_R#cite_note-1">[1]</a></sup> but most of them (all except [χ] and [ʁ]) are considered dialectal. "