I always pronounce it as an R with a strong L sound. But just like English, r’s in words sound a bit different depending on what follows. Sometimes it’s a harsh sound like a pirate, other times it’s softer like “ehhhh” where you hardly hear the R sound. When I’m speaking Japanese, I know in my mind that I’m pronouncing it the same way I usually do, but depending on what follows it could sound a bit different.