Hey, I want you to know you truly are loved, even if its hard to feel or see. Your pain and sadness are not who you are, it is just what you are going through.
I remember in school when i felt the same as you, i didn't think anyone cared for me as no one really showed it. I was always kept to myself, stressed, felt rejected and really depressed. Every day felt like it was on replay, and sometimes it felt like my life was over, and i was drained with no real energy or passion inside.
But my life has changed, and i am a lot happier now. If theres anything i want you to hold onto- it's hope. Within the thickness and darkness of a tunnel, you won't always be able to see the light. Remember that. School can be a very cruel and cold place, and often when you leave is when you really begin to find yourself, your purpose and passions, which is exactly what happened to me.
If there is anything i ask you to do, is to remember how strong you are- how far you've come already and the truth is that you will come out on the other side and the endurance is well worth it.
Just as in life there are seasons- so you too will go through them. Right now and for however long you've been feeling this way, you are in a dark place. This place is not you. You are so much more than where you are at, who is around you and what you have or haven't done. You are worth so much just as you. You are so strong and brave and i am immensely proud of how you have lifted yourself up and carried yourself throughout these times.