I have a friend who is having a bad time trying to make friendships and find relationships.

I have a friend who has a hard time finding their own self-worth, they tell me that all of their friendships and relationships are toxic and bad, I told them that they need to love themselves before they love anyone else, and I proceeded to give them advice, I checked in again today but they have told me that they do not feel any better. I am not sure if I am being too pushy and if I should back it up a little, but at the same time, they ask for my advice. I am not really sure what to do because I am only 14, I obviously don't want to leave them in the dark but I really need help on what to do.