Modern parents would know the benefits of knowing more than one language so they would intentionally send their children for extra lessons or choose a school with education system that allows the nurturing of more than one language.
At a young age, most kids may not reject learning a new language but learning through fun would culture greater interest.
Learning should be out of interest rather than for a coming examination.
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In my country, kids learn more than one language in school but it comes with an exam so they do not enjoy it as much as they should.
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Getting promoted may often depend on the overall results for all subjects that can add extra stress to the young ones.
Cultivate the joy of learning can really nurture a lifelong learner.