To be alive, you have to have a purpose of living, you need the necessities of surviving: food, shelter, and clothing, and you need to be happy.
Some people do not have food, shelter, or clothing and they die of starvation, extreme weather, or even hydration.
Some people aren't happy and cannot find a purpose of living, so they commit die.
So if you're living, then you're alive. Being dead inside is basically you want to die and you have suicidal thoughts. That's not living.
To be alive, you live your life to the fullest and be the happiest you can be.
