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I think it largely feeds into itself, feelings of alienation leads to isolation which leads to more alienation, so it is a kind of trick
it could be other factors in your life too that contribute, like lack of meaning, purpose, or lack of meaningful self-expression

for me, it's hard to say, I don't emote much
Though being blocked off from your true feelings could be a sign of depression or related to the feelings of alienation, hard to say