Other’s and others’ are both correct forms of the word “other.” Use others when referring to a group of people or things, such as “The others are waiting for you outside.” Use others’ for plural possessive form, such as “The others’ opinions are very important to me.” Other’s acts as the singular possessive form.

English pronunciation of others others How to pronounce others US /ˈʌð.ərz/

We can use other as a pronoun. As a pronoun, other has a plural form, others: We have to solve this problem, more than any other, today. I’ll attach two photos to this email and I’ll send others tomorrow.

Others replaces “other ones” or "other + plural noun". Only others can be used as a pronoun and not other.