I am seeking more and more metal songs about loneliness or being alone, in its lyric, or even just "loneliness/alone" word in the song title. (But preferable of the the main topic case). Im pretty sure a lot songs for this theme, too many so would to know specifically your case or suggestion. I recently been through these recently which urge me open the topic:

Revolution Renaissance - Loneliness of A Thousand Years
Revolution Renaissance - Keep The Flame Alive
Dark The Suns - Alone
Stratovarius - Forever

Opinionatedly, need more recommendations because songs about loneliness almost has so beautiful music/lyric. And only and only metal genre deals with it.

So, share yours and thanks