Become a tutor:
Earn by working as a language tutor or translator.
Sell your original content:
You can sell your work in some of the trusted platform.
Become a tour guide:
You can work as a tour guide by working in a tour industry.
Create language related videos on YouTube:
You can earn by making language related videos and
by uploading them on YouTube.
Do some freelance writing:
You can earn by doing freelance writing.