I truely find it difficult too and difficult to deal with.
Reading your comment make me think deeply on what to respond as it is a vry sensitive topic. I may not know what you have been through. What I learned from my experiences with family and friends, we don’t set high expectations from them like they will always be there for us because they won’t. We should realize that they also have a lot in their plate. They might-be busy during the time we need them but we should be strong enough to face our own battles and trust God.
Loneliness is a terrible feeling. I sometimes feel lonely myself and there were moments in my life that I tend to detach my self from other people. It never went easily. What worked for me is I have that strong support group that I can always count on and who were there for me in different times. Sometimes they do know how I feel and some times they don’t. What works for me might not work for others. But if you feel lonely look for an outlet and keep yourself busy. Think positively even if the situation seems to be very ugly. Importantly, I believe in prayers and our mighty God. He will surely not put us in a battle we cannot fight.
I hope you are doing good and have overcome what you’ve been through.
RE: Remember, your life is valuable. Do not take it or even think about taking it!