[ɬ] voiceless alveolar lateral fricative [0]
in a sufficient fluent manner (except you happen to speak e.g. Welsh, there the sound is written as ll so by happenstance the "axolotl" found in Wales can be pronounced fluently by the Welsh) otherwise you are saying it half correct which is arguably worse.
So let the nahuatl speaking people have a laugh at your expense for pronouncing it the germanic way or if you want to go unnoticed do it the evolved spanish romanic way, a good middle ground I guess.
Anyway I think it is generally a lot fun to hear words pronounced "wrong" by foreigners or having trouble hearing/pronouncing it "right" respectively heavy accents are hilarious icebreakers (:
[0]https://en.wikipedia.org/wiki/Voiceless_dental_and_alveolar_...