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.
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.
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.