翻译：我将注定孤单一辈子。

It's my fate to live alone for my lifetime.

I was bone to have a longly life.
be bone to do sth.生来注定做… 这是一个常用短语

i'm sure to be all alone in my whole life

i am meant to end up alone.

I will be able to lonely three score years and ten.

I'm a person destined to be alone the whole life