Some of the people you thought were friends were actually acquaintances. They centred their friendship with you around an activity (eg. drinking alcohol) and not around you. Nobody “needs” friends. Of course they are nice to have but one does not need them. If one does need them then it is an attachment which is not healthy. If you feel a need then you are putting out “lack” which is not attractive, or will attract the wrong kinds of people. All you can put out is love because you are love. This will then attract people who want to share that love. This can happen with total strangers. Maybe they will become real friends.