if you know the anime kara no kyoukai, shiki said something about it that i find very strong. About the unconditional love you are meant to have as a child, it makes you feel like the world cares about you. Or not. If you haven't experienced that you can't love yourself, I think. Love yourself is an abstraction, that why its upseting/annoying when you dont understand or feel it, or if youre autistic: you can love someone, a thing, an activity, but "yourself" is a concept and state of consciousness.In psychology loving yourself means the "caring" thing, when you integrate all the love around you, or for you as a child, the right treatment, and after that you continue to give it to yourself, as if you were your own parent.But if that failed , it's hard to be to youserlf something else than an abusive indifferent or neglect asshole, i think love is something you give and receive, and learn with others, not only by youserlf.But its very difficult or maybe impossible to learn this unconditionnal love with casual, normies, adult relationship