The context of "FF" drastically changes the meaning of "LOL." Therefore, there are two possible answers.
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If "FF" refers to Final Fantasy, then "LOL" most likely retains its internet slang meaning, which is laugh out loud.
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If "FF" refers to the mobile game Free Fire, then "LOL" most likely still retains its internet slang meaning, which is laugh out loud. This is its most common usage.
In conclusion, regardless of whether "FF" refers to Final Fantasy or Free Fire, the full form of "LOL" is most commonly understood as laugh out loud.
