language choice for indexing, product name, product collections can impact SEO by the language?

My B2C store is for customers in South Korea. the store language are in Korean and product title and product collections titles are in Korean language as well. Changing of these language choice can impact SEO?

I am thinking product title and product collection title to English since Shopify analytics can’t seem to display Korean language for “Sessions by landing page” display

if changing to English will impact SEO by Korean then I may need to find another way or find a way to Shopify analytics to display Korean properly.