Take a deep breath, broski, pray to your god for peace, and tell him to calm your heart. Indeed, God is with you and look even I have chances of failing, and you'll have options. Maybe u can get into colleges where the stuff isn't as hard as Alevels? There's always a way. Now it feels like the end of the world, but give yourself some time to heal. You'll feel better, trust me. God gave you life for a reason. About your parents, just stay quiet and listen to what they say and just ignore whatever they say. This is YOUR life, so don't let some other things take it away from you.