[Laian]

Honestly, just pronounce them as Ls.


When I was studying in Japan, it boggled my mind when people years deep in studying Japanese still pronounced the らりるれろs with an R sound.

Next time you say something like れんらく (renraku) just say "Lenlaku." Honestly. If you try to perform some of these other suggestion of meeting some medium point between both the L and R pronunciations, you'll just look like you're trying too hard and it wont be natural.

Best of luck.