How do you say no-one walks alone in Latin?

Answer 1

For one masculine person or object: Es non solus For one feminine person or object: Es non sola For multiple masculine people or objects: Estis non soli For multiple feminine people or objects: Estis non solae For multiple feminine and masculine things, use the multiple masculine one. For one neuter object: Es non solum For two or more: Estis non sola

Answer 2

Nullus solus ambulat would be one way of saying this