Troglodyte
A person who desires to live alone is often referred to as a "solitary" or a "recluse."
A "hermit" is a person who chooses to live alone
A person who desires to live alone can be called a recluse or a solitary individual.
Such a person is a recluse.
Hermit!
a person who by desire lives alone
recluse, hermit, loner.
recluse
A person who is withdrawn from society and lives alone is often referred to as a hermit or a recluse.
A Hermit.
People can survive alone by keeping a positive outlook. As long as a person has the necessities and lives a good life, it will not matter if they are alone.