Please correct me if someone has more experience, especially in Japanese.

Korean is with a few exceptions. Hindi has male and female but only denoted through verb endings. Japanese has no grammatical gender iirc but makes a lot of social distinctions between male and female.

Nice. doesn't know those about Korean and Hindi. Are they also genderless ?

English has a disadvantage of pronunciations being often not mappable to the written form. I blame French for that

Of these three, I guess Hindi is the easiest to learn. Simple alphabet, two tenses, no special characters to know. I guess Korean is a close second. But all of them I'd consider easier to learn than English.

Grammatically I can think of quite a few. Korean, Japanese, and Hindi for example

ironically, I should first learn proper English before advocating for it :)